Study: Nitrogen limits add to warming

2 F by 2100 possible, experts say, citing impact on plants

Usually when we worry about global warming, carbon is all we think about. But it turns out we have a new element to worry about: nitrogen.

Specifically, the lack of it.

Humanity’s carbon-belching habit is a feast for plants, which consume the greenhouse gas carbon dioxide (CO2) as they grow. But they also need nitrogen, and, according to a new study, as rising carbon levels fuel more plant growth in the coming decades, Earth’s hungry greenery is going to start running low on nitrogen.

MSNBC