A group of biogeochemists have shown that a rare form of the gas can act as a fingerprint for microbial nitrogen conversion.

Element cycles are the biogeochemical pathways by which elements are transformed and moved through various states by geological and biological processes.

Explaining death to a child involves teaching four key concepts: death is irreversible, all life functions end, everything alive eventually dies, and there are physical causes of death. Most children ...

If you’re someone who’s drawn to the possibilities of movies, where sitting down means tripping to worlds and galaxies beyond our own, or through memories of the perilous, personal, and beautiful ...

A typical four-stroke (Otto) engine performs intake, compression, combustion and exhaust. Otto’s modern four-stroke engine was invented by Nicolaus August Otto in 1876 and already featured a ...

An eye-popping utility bill can make it feel like something has gone badly wrong overnight. One New Jersey homeowner opened a PSE&G statement and saw a total that was close to four figures. "We just ...

Florida’s primary results were all over the map. But one especially ugly race says a lot about where the GOP is headed.

A daily, curiosity-driven guide to the big, weird, and fascinating ideas shaping the news cycle.