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A tractor sprays fertilizer or pesticides on a green field.
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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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Faint Galactic Halos

Life Lessons
Simulation of cells’ response to electrical pulses

On the Pulse

Physics at the Edge
Undergraduate students Haley Bowden and Ryan Sadjadi

Golden Undergrads

It's a Match

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