Researchers use a portable fluorescence spectrometer to analyze the glowing formations in underground caves. Now, researchers ...

NASA’s Curiosity rover has unearthed the largest organic molecules ever detected on Mars—possible fragments of fatty ...

Skoltech researchers have theoretically investigated the wide range of molecules that oxygen and carbon atoms can form in addition to the well-known carbon dioxide and carbon monoxide. Compounds of ...

Silver discolours and darkens when it is exposed to sulfur-containing gases such as hydrogen sulfide. This change results from a corrosion process called tarnishing which produces silver sulfide.