Of course you’ve seen the enormous anvil-shaped thunderstorm clouds (wait a minute, says the younger crowd, what’s an anvil?). A new study suggests those anvils are getting bigger through a warming climate:
Pollution strengthens thunderstorm clouds, causing their anvil-shaped tops to spread out high in the atmosphere and capture heat — especially at night, said lead author and climate researcher Jiwen Fan of the Department of Energy’s Pacific Northwest National Laboratory.
Previous studies showed that pollution led to bigger clouds, also.

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