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The Hindu
The Hindu
Technology
Clive Trueman

What stones inside fish ears are telling us about climate change

As a marine biologist, I’ve always found it fascinating to learn about how animals adapt to their habitat. But climate change has made it more important than ever – wild animals’ futures may depend on how much we understand about them.

Fish have a kind of stone in their ear that scientists can read like tree rings. My team’s new research found a way to decode the chemicals in these stones to measure how much energy they used when alive. What we learned could help bluefin tuna survive the climate crisis.

There is still so much we don’t know about how animals respond when their habitat suddenly changes. Temperature is one of the most important puzzle pieces, as it affects the rates of the chemical reactions that define life.

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