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Earth, Mars and Venus all looked pretty similar when they first formed. Today, Mars is dry, cold, and dusty; Venus has a hot, crushing atmosphere. Why did these sibling planets turn out so different?
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Every spring, a remarkable sight unfolds in the San Gabriel Mountains north of Los Angeles, as thousands of songbirds fly north.
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Some birds kill their siblings soon after hatching. Other birds spend their whole lives with their siblings and will even risk their lives to help each other.
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A rise in breast cancer among younger women prompted the U.S. Preventive Task Force to issue new screening guidelines. They recommend mammograms every other year, starting at age 40.
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An economic perspective on misinformation
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A therapy that restores brain cells impaired by a rare genetic disorder may offer a strategy for treating conditions like autism, epilepsy, and schizophrenia.
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A new study shows people who are in the habit of climbing stairs are less likely to die from heart disease compared to those who don't. Stair climbers also had a slight boost in longevity.
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Researchers have found that a warm, close bond with a sibling in early adult life is predictive of good emotional health later in life, with less loneliness, anxiety and depression.
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An anti-smoking advocate says the decision to leave menthol cigarettes on the market "prioritizes politics over lives, especially Black lives."
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A recent survey found that Americans' sleep patterns have been getting worse. Adult women under 50 are among the most sleep-deprived demographics.
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Health officials say there's very little risk to humans from the bird flu outbreak among dairy cattle, but there's still much they don't know. Here are four questions scientists are trying to answer.
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After studying various species earlier this month, some scientists now say they understand the origin of animal behavior during solar eclipses.