Nitrogen is essential for growth and development of living things. It’s involved with almost all aspects of life: in amino acids that constitute protein, in DNA and RNA that control genetic ...

Earth’s habitability may trace back to a precise chemical balance during its formation, one that kept life-critical elements from disappearing into the core or drifting into space.

Ancient enzymes show life’s nitrogen signal stayed unchanged for billions of years, helping scientists read early Earth.

Nitrogen is an essential element for living organisms, needed to build DNA, proteins and chlorophyll. Although nitrogen makes up nearly 80% of the air we breathe, it’s availability to plants and ...