You’ve heard of plastics in the ocean. Get ready for metals in the sky.
A new study has found widespread metallic particles in the stratosphere, one of the highest layers of the atmosphere, where the ozone layer protects the world from ultraviolet radiation. Researchers say the contaminants are not normally found in such unusual concentrations and likely bled from satellites, rocket components, and other space-faring vehicles as they reentered the atmosphere.
