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This is Scientific American's 60-second science.

I'm Christopher in Taliatta.

Plants need three things to grow, air, water, and nutrients. Farmers usually take care of the last bit by fertilizing their fields.

But now scientists have found a type of corn that seems to thrive on air and water alone.

This has been sort of the holy grail. if only I could grow corn and not put 200 pounds

of nitrogen on it.

Alan Van Dynes is a plant breeder at the University of California Davis and part of a team

that analyzed this one corn's unusual ability.

The corn variety hails from Wohaca, Mexico, where it typically grows in nitrogen-poor soils.

Nitrogens needed for proteins, DNA, and the chlorophyll

that lets plants perform photosynthesis. But the Wahakinkorn does well despite the bad soil, and with little

or no fertilization. The plants pull off this trick with thick red aerial roots that protrude from

the stem above the ground and ooze out a clear goo packed with

sugars. That slime is the perfect habitat for nitrogen-fixing bacteria, a sugar-rich, oxygen-poor

environment where the microbes transform nitrogen gas into a soluble form that corn plant can use.

It's an above-ground version of the nitrogen fixation you might

...