Scientific American

Scientific American

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Seasonal variations play a major role in the animal kingdom—in reproduction, food availability, hibernation, even fur color. Whether this seasonality has such a significant...

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Extinction. When species go bye-bye forever, we usually blame things like climate change, volcanic eruption or asteroid impact. But for the giant flightless birds...

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Extinction. When species go bye-bye forever, we usually blame things like climate change, volcanic eruption or asteroid impact. But for the giant flightless birds...

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Extinction. When species go bye-bye forever, we usually blame things like climate change, volcanic eruption or asteroid impact. But for the giant flightless birds...

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Organized religion is a cornerstone of spiritual community and culture around the world. Religion, especially religious education, also attracts secular support because many believe...

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As the Panthers and Broncos faced off in the third quarter of last night’s Super Bowl, wide receiver Philly Brown suffered a possible concussion—and...

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“Less than 4 percent of countries are responsible for over half of the world’s greenhouse gas emissions. James Watson, of the University of Queensland and...

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Twenty-five years ago U.S.-led Coalition forces launched the world’s first “space war” when they drove Iraqi troops out of Kuwait. Although the actual fighting...