Whale stress levels influenced by human activity, earwax study suggests

Whale stress levels influenced by human activity, earwax study suggests

Scientists have mapped whale stress levels in relation to human activity going back nearly a century and a half — using earwax collected from baleen whales. From 1870 to 2016, the whales’ stress levels seem to be closely associated with activities such as industrial whaling, naval operations during World War II, and rising sea-surface temperatures, […]

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