Nitrogen shortage limits young tropical forest growth, slowing carbon capture that could help fight climate change.

Alabama Department of Corrections via AP and AP Alabama executed a death row prisoner Thursday using nitrogen gas, becoming the first state in the U.S. to use the gas in an execution, despite concerns ...

Young tropical forests play a crucial role in slowing climate change. Growing trees absorb carbon dioxide from the air, using ...

An Alabama inmate, who officials say is scheduled to die in October by nitrogen hypoxia, is pushing for execution by firing squad, hanging or medical-aid-in-dying instead. Anthony Boyd has filed a ...

Alabama death row prisoner Kenneth Smith may only have days to live. Perhaps in anticipation of his execution, it has been reported that he is "sick in his stomach" and has been vomiting most days. He ...

Kenneth Smith, 58, became the first American to be executed by nitrogen gas. The Alabama attorney general said Friday that nitrogen gas is now a "proven" method of execution and that he believes more ...

Climate change also alters nitrogen in soils and plants, shaping food quality, water safety, and pollution risks worldwide.