With few easy solutions to their climate problem, airlines rethink contrails
			
								Washington Post
								
			
						MIT researchers are discovering new ways to avoid contrails and minimize their impact on global warming. Florian Allroggen (Aeronautics and Astronautics) states that the exact impact of contrails compared to aviation’s total warming effect isn’t known for certain; regardless, “it’s a big contributor and we need to worry about it.”