Are there any 100% renewable energy aircraft in development?

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There seem to be several options for aircraft R&D regarding cleaner fuels for the time when fossil fuels are no longer economically viable.



Some of these include:




  • Algae. A drop-in fuel. These fuels are being used and developed in co-operation with the USAF. They have had several successful test flights.


  • Batteries. Doesn't seem viable at this stage.


  • Nuclear reactor on board. Doesn't sound safe.


  • Hydrogen. This wiki page says they could be built by 2020. That's only a year away now...

I've found a few examples of test prototypes & flights using fuel mixtures that improve emissions and gasoline consumption, but are there any commercial aircraft in development, with an expected launch date that utilize 100% renewable energy?










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    up vote
    1
    down vote

    favorite












    There seem to be several options for aircraft R&D regarding cleaner fuels for the time when fossil fuels are no longer economically viable.



    Some of these include:




    • Algae. A drop-in fuel. These fuels are being used and developed in co-operation with the USAF. They have had several successful test flights.


    • Batteries. Doesn't seem viable at this stage.


    • Nuclear reactor on board. Doesn't sound safe.


    • Hydrogen. This wiki page says they could be built by 2020. That's only a year away now...

    I've found a few examples of test prototypes & flights using fuel mixtures that improve emissions and gasoline consumption, but are there any commercial aircraft in development, with an expected launch date that utilize 100% renewable energy?










    share|improve this question























      up vote
      1
      down vote

      favorite









      up vote
      1
      down vote

      favorite











      There seem to be several options for aircraft R&D regarding cleaner fuels for the time when fossil fuels are no longer economically viable.



      Some of these include:




      • Algae. A drop-in fuel. These fuels are being used and developed in co-operation with the USAF. They have had several successful test flights.


      • Batteries. Doesn't seem viable at this stage.


      • Nuclear reactor on board. Doesn't sound safe.


      • Hydrogen. This wiki page says they could be built by 2020. That's only a year away now...

      I've found a few examples of test prototypes & flights using fuel mixtures that improve emissions and gasoline consumption, but are there any commercial aircraft in development, with an expected launch date that utilize 100% renewable energy?










      share|improve this question













      There seem to be several options for aircraft R&D regarding cleaner fuels for the time when fossil fuels are no longer economically viable.



      Some of these include:




      • Algae. A drop-in fuel. These fuels are being used and developed in co-operation with the USAF. They have had several successful test flights.


      • Batteries. Doesn't seem viable at this stage.


      • Nuclear reactor on board. Doesn't sound safe.


      • Hydrogen. This wiki page says they could be built by 2020. That's only a year away now...

      I've found a few examples of test prototypes & flights using fuel mixtures that improve emissions and gasoline consumption, but are there any commercial aircraft in development, with an expected launch date that utilize 100% renewable energy?







      fuel fuel-systems






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      asked 1 hour ago









      Cloud

      2,35111340




      2,35111340




















          3 Answers
          3






          active

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          up vote
          2
          down vote













          Contrary to one clause of your question, there are a number of battery-electric light aircraft (or what the USA calls "light sport" class) in development, with prototypes flying. This includes both fixed-wing conventional types with single or multiple electric powered propellers, and "drone" style craft using what amounts to thrust hover with electric powered propellers. Flight time is limited, but better with the fixed wing types -- enough so that I'd call an electric motor glider a very feasible design.



          Hydrogen has limited usefulness, for the same reasons it doesn't work well for cars: it's technologically difficult to store enough for reasonable range. Either extreme pressure, extreme cold, or a chemical storage method that limits the rate at which you can draw fuel are reqired.



          A submarine type nuclear reactor was operated aboard a modified B36 in the 1950s -- the project, intended to lead to a strategic bomber with a flight time of weeks or months, was dropped due to lack of need as well as cost and safety concerns (most of the safety concerns, such as "roll-up" explosions, were later resolved or found to be overblown). This kind of power isn't "fully renewable" anyway -- fission fuel must be mined, it isn't grown.



          Algae fuels, as drop-in replacements for kerosene, may have some usefulness, but there are storage issues (hard to stockpile something that can mold or rot) -- as you note, however, testing is in progress, and we'll know in a few years.






          share|improve this answer
















          • 1




            Plus, the world is awash in oil for the next century or two.
            – John K
            32 mins ago










          • @JohnK Yes and no. There will be a point (some sources say in the next 20 years) where the cost of mining oil is higher than any reasonable selling price. Disregarding that, emission legislation will prevent burning of fossil fuels way before we 'run out'. Most European countries are banning the sale of fossil fuels cars by 2040, with some, such as Norway implementing this as soon as 2020! Aviation will surely be next...
            – Cloud
            13 mins ago










          • @Cloud There's more untapped fuel in the ground than we have mined in human history. For example, the United States has a policy in place that generally (though not always), we don't harvest our own fuel, as in the event of world war or collapse of the oil industry, we can mine our own for another hundred plus years. It's incredibly easy to swap cars to renewable energy compared to aircraft. The energy expenditure to fly is many multiples of the energy expenditure to roll across the ground. I can tell you that the aerospace industry has no plans to do a "full switch" anytime soon.
            – Matt
            3 mins ago











          • @Matt Well if the government impose it, the aerospace industry won't have a choice.
            – Cloud
            33 secs ago

















          up vote
          1
          down vote













          Yes, there are projects to power the jet engines by oil from plants: canola (rapeseed), coconuts and soybeans. This fuel is also cleaner (less sulfur) and even freezing point (-47 degrees C) is acceptable.



          While not an immediate certified replacement, these oils can work as jet fuel without radically re-designing the engine. Some refining technology and suitable engines are under development.



          Planes with piston diesel engines could also probably run on this fuel.






          share|improve this answer



























            up vote
            0
            down vote













            Batteries are indeed more feasible then you give them credit for. For short hop flights they are actually within reason:



            https://arstechnica.com/tech-policy/2018/10/scotlands-orkney-islands-may-see-electric-plane-service-by-2021/




            ...the added benefit of electrifying the Orkney Islands flights is that there's an abundance of renewable energy, especially wind energy, already on the grid in the area.



            Though replacing the jet fuel burned by small island-hopping planes in a remote part of the world may seem like a drop in the bucket in efforts to reduce emissions, starting small is often a path to thinking big. If the shortest flights in the world can be flown successfully, gradually longer and longer commercial electric flights may someday be attempted.







            share|improve this answer








            New contributor




            zymhan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
            Check out our Code of Conduct.

















            • You might also add a BBC article on Norway - bbc.com/future/story/…
              – Jon Custer
              1 min ago










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            3 Answers
            3






            active

            oldest

            votes








            3 Answers
            3






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes








            up vote
            2
            down vote













            Contrary to one clause of your question, there are a number of battery-electric light aircraft (or what the USA calls "light sport" class) in development, with prototypes flying. This includes both fixed-wing conventional types with single or multiple electric powered propellers, and "drone" style craft using what amounts to thrust hover with electric powered propellers. Flight time is limited, but better with the fixed wing types -- enough so that I'd call an electric motor glider a very feasible design.



            Hydrogen has limited usefulness, for the same reasons it doesn't work well for cars: it's technologically difficult to store enough for reasonable range. Either extreme pressure, extreme cold, or a chemical storage method that limits the rate at which you can draw fuel are reqired.



            A submarine type nuclear reactor was operated aboard a modified B36 in the 1950s -- the project, intended to lead to a strategic bomber with a flight time of weeks or months, was dropped due to lack of need as well as cost and safety concerns (most of the safety concerns, such as "roll-up" explosions, were later resolved or found to be overblown). This kind of power isn't "fully renewable" anyway -- fission fuel must be mined, it isn't grown.



            Algae fuels, as drop-in replacements for kerosene, may have some usefulness, but there are storage issues (hard to stockpile something that can mold or rot) -- as you note, however, testing is in progress, and we'll know in a few years.






            share|improve this answer
















            • 1




              Plus, the world is awash in oil for the next century or two.
              – John K
              32 mins ago










            • @JohnK Yes and no. There will be a point (some sources say in the next 20 years) where the cost of mining oil is higher than any reasonable selling price. Disregarding that, emission legislation will prevent burning of fossil fuels way before we 'run out'. Most European countries are banning the sale of fossil fuels cars by 2040, with some, such as Norway implementing this as soon as 2020! Aviation will surely be next...
              – Cloud
              13 mins ago










            • @Cloud There's more untapped fuel in the ground than we have mined in human history. For example, the United States has a policy in place that generally (though not always), we don't harvest our own fuel, as in the event of world war or collapse of the oil industry, we can mine our own for another hundred plus years. It's incredibly easy to swap cars to renewable energy compared to aircraft. The energy expenditure to fly is many multiples of the energy expenditure to roll across the ground. I can tell you that the aerospace industry has no plans to do a "full switch" anytime soon.
              – Matt
              3 mins ago











            • @Matt Well if the government impose it, the aerospace industry won't have a choice.
              – Cloud
              33 secs ago














            up vote
            2
            down vote













            Contrary to one clause of your question, there are a number of battery-electric light aircraft (or what the USA calls "light sport" class) in development, with prototypes flying. This includes both fixed-wing conventional types with single or multiple electric powered propellers, and "drone" style craft using what amounts to thrust hover with electric powered propellers. Flight time is limited, but better with the fixed wing types -- enough so that I'd call an electric motor glider a very feasible design.



            Hydrogen has limited usefulness, for the same reasons it doesn't work well for cars: it's technologically difficult to store enough for reasonable range. Either extreme pressure, extreme cold, or a chemical storage method that limits the rate at which you can draw fuel are reqired.



            A submarine type nuclear reactor was operated aboard a modified B36 in the 1950s -- the project, intended to lead to a strategic bomber with a flight time of weeks or months, was dropped due to lack of need as well as cost and safety concerns (most of the safety concerns, such as "roll-up" explosions, were later resolved or found to be overblown). This kind of power isn't "fully renewable" anyway -- fission fuel must be mined, it isn't grown.



            Algae fuels, as drop-in replacements for kerosene, may have some usefulness, but there are storage issues (hard to stockpile something that can mold or rot) -- as you note, however, testing is in progress, and we'll know in a few years.






            share|improve this answer
















            • 1




              Plus, the world is awash in oil for the next century or two.
              – John K
              32 mins ago










            • @JohnK Yes and no. There will be a point (some sources say in the next 20 years) where the cost of mining oil is higher than any reasonable selling price. Disregarding that, emission legislation will prevent burning of fossil fuels way before we 'run out'. Most European countries are banning the sale of fossil fuels cars by 2040, with some, such as Norway implementing this as soon as 2020! Aviation will surely be next...
              – Cloud
              13 mins ago










            • @Cloud There's more untapped fuel in the ground than we have mined in human history. For example, the United States has a policy in place that generally (though not always), we don't harvest our own fuel, as in the event of world war or collapse of the oil industry, we can mine our own for another hundred plus years. It's incredibly easy to swap cars to renewable energy compared to aircraft. The energy expenditure to fly is many multiples of the energy expenditure to roll across the ground. I can tell you that the aerospace industry has no plans to do a "full switch" anytime soon.
              – Matt
              3 mins ago











            • @Matt Well if the government impose it, the aerospace industry won't have a choice.
              – Cloud
              33 secs ago












            up vote
            2
            down vote










            up vote
            2
            down vote









            Contrary to one clause of your question, there are a number of battery-electric light aircraft (or what the USA calls "light sport" class) in development, with prototypes flying. This includes both fixed-wing conventional types with single or multiple electric powered propellers, and "drone" style craft using what amounts to thrust hover with electric powered propellers. Flight time is limited, but better with the fixed wing types -- enough so that I'd call an electric motor glider a very feasible design.



            Hydrogen has limited usefulness, for the same reasons it doesn't work well for cars: it's technologically difficult to store enough for reasonable range. Either extreme pressure, extreme cold, or a chemical storage method that limits the rate at which you can draw fuel are reqired.



            A submarine type nuclear reactor was operated aboard a modified B36 in the 1950s -- the project, intended to lead to a strategic bomber with a flight time of weeks or months, was dropped due to lack of need as well as cost and safety concerns (most of the safety concerns, such as "roll-up" explosions, were later resolved or found to be overblown). This kind of power isn't "fully renewable" anyway -- fission fuel must be mined, it isn't grown.



            Algae fuels, as drop-in replacements for kerosene, may have some usefulness, but there are storage issues (hard to stockpile something that can mold or rot) -- as you note, however, testing is in progress, and we'll know in a few years.






            share|improve this answer












            Contrary to one clause of your question, there are a number of battery-electric light aircraft (or what the USA calls "light sport" class) in development, with prototypes flying. This includes both fixed-wing conventional types with single or multiple electric powered propellers, and "drone" style craft using what amounts to thrust hover with electric powered propellers. Flight time is limited, but better with the fixed wing types -- enough so that I'd call an electric motor glider a very feasible design.



            Hydrogen has limited usefulness, for the same reasons it doesn't work well for cars: it's technologically difficult to store enough for reasonable range. Either extreme pressure, extreme cold, or a chemical storage method that limits the rate at which you can draw fuel are reqired.



            A submarine type nuclear reactor was operated aboard a modified B36 in the 1950s -- the project, intended to lead to a strategic bomber with a flight time of weeks or months, was dropped due to lack of need as well as cost and safety concerns (most of the safety concerns, such as "roll-up" explosions, were later resolved or found to be overblown). This kind of power isn't "fully renewable" anyway -- fission fuel must be mined, it isn't grown.



            Algae fuels, as drop-in replacements for kerosene, may have some usefulness, but there are storage issues (hard to stockpile something that can mold or rot) -- as you note, however, testing is in progress, and we'll know in a few years.







            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered 49 mins ago









            Zeiss Ikon

            2,678315




            2,678315







            • 1




              Plus, the world is awash in oil for the next century or two.
              – John K
              32 mins ago










            • @JohnK Yes and no. There will be a point (some sources say in the next 20 years) where the cost of mining oil is higher than any reasonable selling price. Disregarding that, emission legislation will prevent burning of fossil fuels way before we 'run out'. Most European countries are banning the sale of fossil fuels cars by 2040, with some, such as Norway implementing this as soon as 2020! Aviation will surely be next...
              – Cloud
              13 mins ago










            • @Cloud There's more untapped fuel in the ground than we have mined in human history. For example, the United States has a policy in place that generally (though not always), we don't harvest our own fuel, as in the event of world war or collapse of the oil industry, we can mine our own for another hundred plus years. It's incredibly easy to swap cars to renewable energy compared to aircraft. The energy expenditure to fly is many multiples of the energy expenditure to roll across the ground. I can tell you that the aerospace industry has no plans to do a "full switch" anytime soon.
              – Matt
              3 mins ago











            • @Matt Well if the government impose it, the aerospace industry won't have a choice.
              – Cloud
              33 secs ago












            • 1




              Plus, the world is awash in oil for the next century or two.
              – John K
              32 mins ago










            • @JohnK Yes and no. There will be a point (some sources say in the next 20 years) where the cost of mining oil is higher than any reasonable selling price. Disregarding that, emission legislation will prevent burning of fossil fuels way before we 'run out'. Most European countries are banning the sale of fossil fuels cars by 2040, with some, such as Norway implementing this as soon as 2020! Aviation will surely be next...
              – Cloud
              13 mins ago










            • @Cloud There's more untapped fuel in the ground than we have mined in human history. For example, the United States has a policy in place that generally (though not always), we don't harvest our own fuel, as in the event of world war or collapse of the oil industry, we can mine our own for another hundred plus years. It's incredibly easy to swap cars to renewable energy compared to aircraft. The energy expenditure to fly is many multiples of the energy expenditure to roll across the ground. I can tell you that the aerospace industry has no plans to do a "full switch" anytime soon.
              – Matt
              3 mins ago











            • @Matt Well if the government impose it, the aerospace industry won't have a choice.
              – Cloud
              33 secs ago







            1




            1




            Plus, the world is awash in oil for the next century or two.
            – John K
            32 mins ago




            Plus, the world is awash in oil for the next century or two.
            – John K
            32 mins ago












            @JohnK Yes and no. There will be a point (some sources say in the next 20 years) where the cost of mining oil is higher than any reasonable selling price. Disregarding that, emission legislation will prevent burning of fossil fuels way before we 'run out'. Most European countries are banning the sale of fossil fuels cars by 2040, with some, such as Norway implementing this as soon as 2020! Aviation will surely be next...
            – Cloud
            13 mins ago




            @JohnK Yes and no. There will be a point (some sources say in the next 20 years) where the cost of mining oil is higher than any reasonable selling price. Disregarding that, emission legislation will prevent burning of fossil fuels way before we 'run out'. Most European countries are banning the sale of fossil fuels cars by 2040, with some, such as Norway implementing this as soon as 2020! Aviation will surely be next...
            – Cloud
            13 mins ago












            @Cloud There's more untapped fuel in the ground than we have mined in human history. For example, the United States has a policy in place that generally (though not always), we don't harvest our own fuel, as in the event of world war or collapse of the oil industry, we can mine our own for another hundred plus years. It's incredibly easy to swap cars to renewable energy compared to aircraft. The energy expenditure to fly is many multiples of the energy expenditure to roll across the ground. I can tell you that the aerospace industry has no plans to do a "full switch" anytime soon.
            – Matt
            3 mins ago





            @Cloud There's more untapped fuel in the ground than we have mined in human history. For example, the United States has a policy in place that generally (though not always), we don't harvest our own fuel, as in the event of world war or collapse of the oil industry, we can mine our own for another hundred plus years. It's incredibly easy to swap cars to renewable energy compared to aircraft. The energy expenditure to fly is many multiples of the energy expenditure to roll across the ground. I can tell you that the aerospace industry has no plans to do a "full switch" anytime soon.
            – Matt
            3 mins ago













            @Matt Well if the government impose it, the aerospace industry won't have a choice.
            – Cloud
            33 secs ago




            @Matt Well if the government impose it, the aerospace industry won't have a choice.
            – Cloud
            33 secs ago










            up vote
            1
            down vote













            Yes, there are projects to power the jet engines by oil from plants: canola (rapeseed), coconuts and soybeans. This fuel is also cleaner (less sulfur) and even freezing point (-47 degrees C) is acceptable.



            While not an immediate certified replacement, these oils can work as jet fuel without radically re-designing the engine. Some refining technology and suitable engines are under development.



            Planes with piston diesel engines could also probably run on this fuel.






            share|improve this answer
























              up vote
              1
              down vote













              Yes, there are projects to power the jet engines by oil from plants: canola (rapeseed), coconuts and soybeans. This fuel is also cleaner (less sulfur) and even freezing point (-47 degrees C) is acceptable.



              While not an immediate certified replacement, these oils can work as jet fuel without radically re-designing the engine. Some refining technology and suitable engines are under development.



              Planes with piston diesel engines could also probably run on this fuel.






              share|improve this answer






















                up vote
                1
                down vote










                up vote
                1
                down vote









                Yes, there are projects to power the jet engines by oil from plants: canola (rapeseed), coconuts and soybeans. This fuel is also cleaner (less sulfur) and even freezing point (-47 degrees C) is acceptable.



                While not an immediate certified replacement, these oils can work as jet fuel without radically re-designing the engine. Some refining technology and suitable engines are under development.



                Planes with piston diesel engines could also probably run on this fuel.






                share|improve this answer












                Yes, there are projects to power the jet engines by oil from plants: canola (rapeseed), coconuts and soybeans. This fuel is also cleaner (less sulfur) and even freezing point (-47 degrees C) is acceptable.



                While not an immediate certified replacement, these oils can work as jet fuel without radically re-designing the engine. Some refining technology and suitable engines are under development.



                Planes with piston diesel engines could also probably run on this fuel.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 24 mins ago









                h22

                4,6582559




                4,6582559




















                    up vote
                    0
                    down vote













                    Batteries are indeed more feasible then you give them credit for. For short hop flights they are actually within reason:



                    https://arstechnica.com/tech-policy/2018/10/scotlands-orkney-islands-may-see-electric-plane-service-by-2021/




                    ...the added benefit of electrifying the Orkney Islands flights is that there's an abundance of renewable energy, especially wind energy, already on the grid in the area.



                    Though replacing the jet fuel burned by small island-hopping planes in a remote part of the world may seem like a drop in the bucket in efforts to reduce emissions, starting small is often a path to thinking big. If the shortest flights in the world can be flown successfully, gradually longer and longer commercial electric flights may someday be attempted.







                    share|improve this answer








                    New contributor




                    zymhan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                    Check out our Code of Conduct.

















                    • You might also add a BBC article on Norway - bbc.com/future/story/…
                      – Jon Custer
                      1 min ago














                    up vote
                    0
                    down vote













                    Batteries are indeed more feasible then you give them credit for. For short hop flights they are actually within reason:



                    https://arstechnica.com/tech-policy/2018/10/scotlands-orkney-islands-may-see-electric-plane-service-by-2021/




                    ...the added benefit of electrifying the Orkney Islands flights is that there's an abundance of renewable energy, especially wind energy, already on the grid in the area.



                    Though replacing the jet fuel burned by small island-hopping planes in a remote part of the world may seem like a drop in the bucket in efforts to reduce emissions, starting small is often a path to thinking big. If the shortest flights in the world can be flown successfully, gradually longer and longer commercial electric flights may someday be attempted.







                    share|improve this answer








                    New contributor




                    zymhan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                    Check out our Code of Conduct.

















                    • You might also add a BBC article on Norway - bbc.com/future/story/…
                      – Jon Custer
                      1 min ago












                    up vote
                    0
                    down vote










                    up vote
                    0
                    down vote









                    Batteries are indeed more feasible then you give them credit for. For short hop flights they are actually within reason:



                    https://arstechnica.com/tech-policy/2018/10/scotlands-orkney-islands-may-see-electric-plane-service-by-2021/




                    ...the added benefit of electrifying the Orkney Islands flights is that there's an abundance of renewable energy, especially wind energy, already on the grid in the area.



                    Though replacing the jet fuel burned by small island-hopping planes in a remote part of the world may seem like a drop in the bucket in efforts to reduce emissions, starting small is often a path to thinking big. If the shortest flights in the world can be flown successfully, gradually longer and longer commercial electric flights may someday be attempted.







                    share|improve this answer








                    New contributor




                    zymhan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                    Check out our Code of Conduct.









                    Batteries are indeed more feasible then you give them credit for. For short hop flights they are actually within reason:



                    https://arstechnica.com/tech-policy/2018/10/scotlands-orkney-islands-may-see-electric-plane-service-by-2021/




                    ...the added benefit of electrifying the Orkney Islands flights is that there's an abundance of renewable energy, especially wind energy, already on the grid in the area.



                    Though replacing the jet fuel burned by small island-hopping planes in a remote part of the world may seem like a drop in the bucket in efforts to reduce emissions, starting small is often a path to thinking big. If the shortest flights in the world can be flown successfully, gradually longer and longer commercial electric flights may someday be attempted.








                    share|improve this answer








                    New contributor




                    zymhan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                    Check out our Code of Conduct.









                    share|improve this answer



                    share|improve this answer






                    New contributor




                    zymhan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                    Check out our Code of Conduct.









                    answered 12 mins ago









                    zymhan

                    1011




                    1011




                    New contributor




                    zymhan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                    Check out our Code of Conduct.





                    New contributor





                    zymhan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                    Check out our Code of Conduct.






                    zymhan is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                    Check out our Code of Conduct.











                    • You might also add a BBC article on Norway - bbc.com/future/story/…
                      – Jon Custer
                      1 min ago
















                    • You might also add a BBC article on Norway - bbc.com/future/story/…
                      – Jon Custer
                      1 min ago















                    You might also add a BBC article on Norway - bbc.com/future/story/…
                    – Jon Custer
                    1 min ago




                    You might also add a BBC article on Norway - bbc.com/future/story/…
                    – Jon Custer
                    1 min ago

















                     

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