Researchers investigating the origin of complex life on Earth appear to have solved a longstanding mystery at the heart of how animals, plants, and fungi evolved. To understand the conundrum, you must ...

A giant virus discovered in Japan is adding fuel to the provocative idea that viruses helped create complex life. Named ushikuvirus, it infects amoebae and shows unique traits that connect different ...

In many submerged regions, murky mud shelters strange life-forms that seem to be the key to one of the biggest mysteries of life on Earth. These creatures belong to a domain of life called the archaea ...