When compressed gases, including nitrous oxide, expand, they can reach temperatures as low as minus 40 degrees Fahrenheit.

An evaporating colloidal particle–laden droplet leaves behind a ring-like residue after drying. We routinely observe this ubiquitous phenomenon for dried coffee drops; thus, it is known as the "coffee ...

This comprehensive review maps natural nitrite reductases and synthetic mimics that enable on-demand nitric oxide ...

An oxygen flow meter was forced into a nitrous oxide wall outlet that was directly adjacent to an oxygen outlet in a radiology suite.

Find out what nitrogen oxides (NOx) are, why they are a serious environmental concern, and what role they play in the Volkswagen diesel engine scandal.