Global warming is a major concern, with the growing presence of carbon dioxide being a big part factor. But this powder might be able to combat that issue.

The northern and southern lights, auroras visible from the poles, glow with a range of different colored lights. Here's the reason for each of those colors.

But the most widespread fruit produced and sold in Hong Kong all year round has been the humble banana. A perennial local ...

ESA’s decade-long Milky Way Gaia mapping mission still has tons of data to release over the next few years. Expect surprises.

If nitrogen hypoxia is used, an inmate breathes 100 percent nitrogen, which causes suffocation. Louisiana is one of four states that have approved it for executions.

Frazier is set to die by nitrogen gas for the murder of Pauline Brown in Birmingham, Alabama in 1991. Critics say the method ...

Gov. Jeff Landry announced the Louisiana Department of Public Safety and Corrections has implemented protocol to carry out death sentences using nitrogen gas.

An Alabama inmate convicted of murdering a woman after breaking into her apartment as she slept was put to death Thursday evening in the nation's fourth execution using nitrogen gas. Demetrius ...

A federal judge on Friday refused to stop what would be the fourth nitrogen gas execution in the U.S., saying the inmate had not proven his claims that the new method is unconstitutionally cruel ...

NEW ORLEANS (AP) — Louisiana will seek to resume carrying out death sentences in the coming months after a 15-year pause, ...

Demetrius Frazier is the fourth inmate in Alabama to be executed by nitrogen gas Alabama Department of Corrections via AP An Alabama death row inmate who raped and murdered a woman in 1991 was ...