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How we categorize time depends on who’s doing the categorizing.
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How land surveyors measure both fencelines and 4,000-footers.
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It depends on what animal you’re talking about.
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Plants communicate with each other, but can it really be called “talking?”
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Bad news: Your turfgrass is a water guzzler.
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How and why do some plants stay green in the winter? What's the benefit of being evergreen?
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The ability to perceive many shades of green is not only delightful, but also an evolutionary benefit. For one, it allowed us to detect ripe, nutritious fruits, flowers and leaves against green foliage.
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For some animals, surviving the cold and lack of food in winter depends on slowing down bodily functions like heartbeat and metabolism.
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To find out, we talked to a researcher who lived for a year on Antarctica.
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There’s a reason humid heat usually feels more intense than dry heat.