They're playing our smell.
"If it smells bad, it is bad." Really?
There's lots of ways to tune out sights and sounds, but not smells.
Fertilizers and nanoparticles can lead to unpleasant consequences.
Each weekday, Pulse of the Planet provides a two-minute sound portrait of Planet Earth, tracking the rhythms of nature, culture and science worldwide and blending interviews and extraordinary natural sound.
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