ultraviolet radiation

trichlorofluoromethane, CFC 11, chlorofluorocarbons, Montreal Protocol, China, Beijing, Jeju Island, South Korea, air conditioning, refrigerant, CFC-11, ozone layer, chlorine, UV rays, ultraviolet radiation, CFC-12, cfc 12,

Scientists Trace Mystery Source of Gas Banned by 1987 Agreement to China

A flower of the plant Aristolochia indica. Credit: ChanduBandi/Wikimedia Commons, CC BY 3.0

Substance in Birthwort Plant, Staple of Herbal Medicine, Linked to Liver Cancer

In the constellation Cassiopeia, 7,100 lightyears away, a start 45-times as heavy as our Sun is blowing out superhot winds of gas travelling at 6.4 million km/hr. These winds push against the much cooler blanket of interstellar gas, bunching them up along the surface of a giant bubble over seven lightyears across. Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)

10 Iconic Images to Recall 26 Years of the Hubble Space Telescope