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 ...

When scientists search for alien life, they usually look for planets that resemble Earth. The reasoning is simple. Every known living thing depends on liquid water, carbon based chemistry, and the ...

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 ...