(a species of owlet moth (Noctuid)) Some caterpillars, after they emerge from their egg, can increase their weight by 25,000 times.

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Nature Live archive

Browse the Nature Live video archive by subject, from reptiles to rocks and fungi to fish. There are thousands of creatures in the Museum's collections and over 400 scientists study them, tackling issues from biodiversity loss to climate change.  Pick a webcast to hear them talk about their research and explain what they're trying to find out and what it means for us.

Nature live videos arranged by year

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