"Understanding the function of this neurotransmitter is essential."

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This butterfly lives up to 25 times longer than its relatives.

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Don't catch those raindrops on your tongue.

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It's important to get the full story.

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Pets could affect mood in ways scientists didn't expect.

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Here's how to see it.

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They could do more than feel cool.

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You may not even know you have one.

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A social sync.

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