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Scientists found that pink is the world's oldest colour. They looked at 1.1-billion-year-old rocks. They made powder from them and found a bright pink colour. A scientist experimented on the rocks. She said the pink colour came from tiny animals in oceans of long ago. The oceans are not here today.
The researcher was surprised when the rocks turned pink. She thought they would be black. She explained how important this news is. She said: "Imagine you could find [an old] dinosaur skin that still has its original colour - green or blue. That is exactly the type of discovery that we've made."
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