Spitting pools of hot mud, calm springs cool enough to bathe in, and rivers of boiling water lurk around every corner.

Japan's hot springs reveal how Earth's organisms survived the 'Great Oxidation Event' 2.3 billion years ago: Study A team from the Earth-Life Science Institute in Tokyo analyzed certain hot springs in ...

Earth was not always the blue-green world we know today: the early Earth's oxygen levels were about a million times lower than we now experience. There were no forests and no animals. For ancient ...