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This is Scientific American 60-Second Science. I'm Sophie Bushwick. Got a minute?

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The limpest lettuce still has a little life left.

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A new study finds that produce continues to respond to light cues,

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which enables them to keep protecting themselves from insects and perhaps even enhance their nutritional value to us.

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Scientists knew that a favorite test plant called ArabidoIpsis has strong circadian rhythms.

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Expose Arabidopsis to a set light-dark cycle, and it produces more anti-bug chemicals when it's lit,

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which fights off insects living on the same light schedule.

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In the new study, researchers tried the light-dark test with store-bought cabbage leaves.

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The leaves that were on the same light-dark cycle as hungry insects protected themselves more effectively than leaves on cycles out of sync.

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Other veggies and fruit such as zucchinis and blueberries had similar responses.

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The study is in the journal Current Biology.

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The researchers suggest we try to harvest and preserve produce when its levels of anti-insect chemicals are highest, to help it resist damage.

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Some of those compounds also reduce cancer risk, so we may enhance our health as well.

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Circadian appetit!

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Thanks for the minute, for Scientific American 60-Second Science. I'm Sophie Bushwick.

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