President Joe Biden’s administration is targeting one of the tougher sources of climate-warming greenhouse gases with a plan that calls for the U.S. aviation sector to reach net-zero emissions by 2050. Aviation has been more challenging to decarbonize than automobiles, which can essentially run on batteries, but Biden’s 40-page plan released Tuesday calls for increasing production of sustainable airplane fuels and developing new aircraft technologies. It also urges increasing operational efficiencies to reduce the amount of fuel that is burned during flights. The proposal marks the latest stage of Biden’s climate plans through regulatory action while his legislative agenda proceeds slowly in Congress. It follows his previous efforts to limit methane emissions from oil wells and aim for half of all cars sold in the U.S. to be capable of emissions-free driving by the end of the decade. Transportation Secretary Pete Buttigieg is scheduled to announce details of the […]