How old is Earth?
Although the universe is thought to be about 13.77 billion years old, planet Earth is much younger than that.
Volcanoes
Space
2020 in review: Earth acquired a minimoon the size of a 6-year-old
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Space
Earth鈥檚 early atmosphere may have been toxic like the one on Venus
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Life
A radical new theory rewrites the story of how life on Earth began
Features
Space
Katherine Joy: Uncovering the secrets of the moon
Video
Earth
Moon craters hint huge asteroids bombarded Earth 800 million years ago
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Space
The moon may have stopped the early Earth from being a frozen snowball
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Environment
Only a fifth of ice-free land on Earth has very little human influence
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