Earth
Planet Earth makes its own water from scratch deep in the mantle
Computer simulation confirms that water can form within our planet rather than arriving from space, and the process may explain mysterious deep quakes
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Computer simulation confirms that water can form within our planet rather than arriving from space, and the process may explain mysterious deep quakes
These fish have a travelling eye and swim on their sides in what is the most extreme example of vertebrate asymmetry – now we know how they develop this useful trait