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npr: The giant sequoias in the Sierra Nevada are one of America’s treasures, but for the first time in Sequoia National Park’s history, the trees are showing visible signs of exhaustion due to the drought. On a hike last summer, a scientist noticed that the leaves of the giant sequoias were browning and more sparse…
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we-are-star-stuff: Why Do People ‘Twitch’ When Falling Asleep? A hypnagogic jerk is an involuntary muscle spasm that occurs as a person is drifting off to sleep. The phenomenon is so named in reference to the hypnogogic state — the transitional period between wakefulness and sleep. Hypnagogic jerks are also commonly known as hypnic jerks or…
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Elizabeth Karlsson 
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