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Remote Scottish isles may solve ice age puzzle

A remote cluster of Scottish islands could help solve one of our planet’s greatest mysteries, scientists say.

The Garvellach islands off the west coast of Scotland are the best record of Earth entering its biggest ever ice age around 720 million years ago, researchers have discovered.

The big freeze, which covered nearly all the globe in two phases for 80 million years, is known as “Snowball Earth”, after which the first animal life emerged.

Clues hidden in rocks about the freeze have been wiped out everywhere – except in the Garvellachs. Researchers hope the islands will tell us why Earth went into such an extreme icy state for so long and why it was necessary for complex life to emerge.


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