Soot from aeroplane exhausts can linger in the atmosphere, seeding ice clouds which trap heat.
Planes can create clouds of tiny ice crystals, called contrails, and some studies suggest they could have an a significant effect on climate.
from www.shutterstock.com
Shaun Hendy, University of Auckland, Waipapa Taumata Rau
Globally, emissions from air travel account for only about 3% of the warming human activities are causing, but aviation affects our climate in a number of ways.