Tiny particles floating in the atmosphere have a much bigger impact on the planet than you might think, and human activity plays a role.
The most vibrant sunsets, cloud-choked skies, and cough-inducing days all have something in common: They happen because of aerosols, tiny particles that float in the air. Aerosols can be tiny droplets, dust particles, bits of fine black carbon, and other things, and as they float through the atmosphere they change the whole energy balance of the planet.
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