More than 2,500 plant species have the potential to invade the Arctic at the expense of the species that belong there. Norway is one of the areas that is particularly at risk. Species that are not ...

Scientists have proposed building a lunar quarantine facility to examine samples returned from Mars and other celestial bodies before they ever reach Earth, arguing that the Moon could serve as a ...

LIQUID asphalt is not a likely home, but hardy microbes have been found thriving in a natural lake made of the stuff. The discovery hints that alien life could exist in similar places. Microbes are ...

WHEN Darwin published his theory of evolution in 1859, he gave a convincing account of how life on Earth has evolved over billions of years, from simple microbes to the diversity of the biosphere we ...