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Articles on Early life

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If life survived on Earth 3.7 billion years ago, why not elsewhere in the solar system? Shutterstock/Filip Fuxa

Ancient life in Greenland and the search for life on Mars

Scientists say they’ve found fossils showing life existed on Earth 3.7 billion years ago. How good is the evidence? And what does it mean for the search for life elsewhere in our solar system?
Slime on Earth… that’s all there was for a billion years.

Life on Earth was nothing but slime for a ‘boring billion’ years

Evolution of life on Earth began about 3.5 billion years ago but it has not been a constant or continuous process. During the middle years of Earth’s history (1.8 billion to 800 million years ago), evolution…

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