Bertrand Piccard, Swiss pilot and Chairman of the Solar Impulse sun-powered aircraft company attends a press conference during the COP24 summit on climate change in Katowice, Poland, Tuesday, Dec. 4, 2018.  The two-week meeting brings together diplomats and interested pressure groups from almost 200 countries to discuss the 2015 Paris Accord and other climate issues.
Bertrand Piccard, Swiss pilot and Chairman of the Solar Impulse sun-powered aircraft company attends a press conference during the COP24 summit on climate change in Katowice, Poland, Tuesday, Dec. 4, 2018. The two-week meeting brings together diplomats and interested pressure groups from almost 200 countries to discuss the 2015 Paris Accord and other climate issues. Czarek Sokolowski AP Photo
Bertrand Piccard, Swiss pilot and Chairman of the Solar Impulse sun-powered aircraft company attends a press conference during the COP24 summit on climate change in Katowice, Poland, Tuesday, Dec. 4, 2018. The two-week meeting brings together diplomats and interested pressure groups from almost 200 countries to discuss the 2015 Paris Accord and other climate issues. Czarek Sokolowski AP Photo