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Earth Science

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A tractor sprays fertilizer or pesticides on a green field.
Photo Credit
MaYcaL via iStock
Synthetic fertilizer has increased the amount of nitrogen compounds in the biosphere, compounds that must be converted by microbes back into nitrogen gas.

A rare atomic fingerprint reveals how ecosystems clean nitrogen pollution

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People sit watching erupting volcano in the distance

The Earth’s Newest Secret
2022 AGU award winners
Brown mountains in Antarctica along icy blue waters

Magma and Ice

A Remarkable Impact

Eruption’s Echoes
Diversity in geography