The study showed that microbialites, among Earth's earliest life forms, could thrive without sunlight, using energy from chemicals like hydrogen, iron, ammonia, and sulfur, allowing them to survive ...

RIO DE JANEIRO, July 7 (Xinhua) -- To Brazil, the "Land of the Future" has meant more than a tribute by Austrian writer Stefan Zweig who took refuge in the South American country from war in the 1940s ...