Science Of...

How Do Trees Survive Winter?

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About 250 million years ago, trees could only survive in tropical climates. If their leaves were subjected to colder temperatures, they'd freeze, much like your spinach leaves at home. But trees currently exist in various climates, so what happened? Tree survival in the winter really depends on avoiding two things. Hear what they are in the video below, then learn more about trees and the effects of winter.

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Key Facts In This Video

  1. Researchers have found that less sunlight changes the way your body metabolizes medications. 01:08

  2. Around 23% of your genome expression changes from season to season. 02:18

  3. Even in places that don't undergo a cold winter, people's bodies are affected by seasonal changes. 03:39

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