Academies call for $200m to study atmospheric engineering

Potential of atmospheric additives to mitigate global warming should be explored, experts say

A National Academies of Sciences, Engineering, and Medicine committee has suggested the United States commit $100-200 million over five years to study technologies that could alter global temperatures by reflecting sunlight.

The recommendation came in a 25 March report by an academy committee assembled to look at atmospheric changes humans could make—such as ‘seeding’ some types of cloud with aerosols and thinning others—to counteract some aspects of global warming.