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Which came first: The chicken or the egg?Most biologists will answer confidently when asked "which came first, the chicken or the egg?" but the answer may depend on what type of egg you're talking about.
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Who invented the toilet?Did Thomas Crapper actually create your commode?
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What is brain fog?Mental fuzziness can be frustrating and can be caused by lack of sleep or even an underlying illness.
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What is a runner's high?Here's what the strange euphoria that sets in after aerobic exercise really is.
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'Mars' interior is not behaving,' active mantle plume revealsIn a first, planetary geologists describe an active mantle plume on the surface of Mars.
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Scientists finally discovered the snake clitoris, and they're 'very excited'For the first time, clitorises have been documented in nine different species of snakes from four families.
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How much does a cloud weigh?Clouds look light and fluffy, but they're surprisingly heavy.
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Who owns the moon?Does anyone have sovereignty over the moon? And can anyone buy it?
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Ravenous meat-eating dinosaur's guts preserved in exceptionally rare fossilPaleontologists in China have examined the remarkable gut remnants of a birdlike dinosaur that lived more than 100 million years ago.
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Who really wore togas?Who actually wore togas, and what were they for?
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Long-lost bird species, thought to be extinct, captured in images for 1st time in 140 yearsImages and footage of the black-naped pheasant-pigeon were recently captured by scientists. This is the first documented sighting of the elusive bird since 1882.
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Scientists solved a 500 million-year-old mystery about strange Cambrian structures found in ChinaExtremely detailed Cambrian fossils show that enigmatic skeleton tubes belonged to ancient ancestors of modern jellyfish.
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The Devils Hole pupfish is so inbred that it shouldn’t be aliveNew research reveals exactly how inbred the Devils Hole pupfish is.
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Missing woman’s body discovered in the stomach of 22-foot-long python in IndonesiaA 54-year-old woman in Indonesia was killed and eaten by a massive python
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What if humans had tails?If humans had tails, what would they be like, and how would we use them?
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Where did the idea of the 'wicked stepmother' come from?Many fairytales have an evil stepmother who is determined to ruin the lives of her stepchildren. But what are the roots of this age-old trope?
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What made billions of snow crabs disappear from the Bering Sea?The Bering Sea's snow crab population has been in decline over the last five years, but this season the population has collapsed.
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'Hell fish' likely killed by dinosaur-ending asteroid is preserved in stunning detailScientists recently unearthed stunning fossils of sturgeon from Hell's Creek that might have died on the day that the dinosaur-killing asteroid struck.
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Mount Everest: The deadly history of the world's highest peakMount Everest towers more than 29,000 feet above sea level.
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Why do cats 'play' with their prey?Here's why cats 'play' with their prey before dealing the death blow.
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Ginormous Jurassic fossil in Portugal may be the biggest dinosaur ever found in EuropeWhile researchers have not yet identified the species of an enormous newfound dinosaur, the sauropod is already breaking size records.
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Oldest African dinosaur ever found unearthed in ZimbabweMeet Mbiresaurus raathi, the oldest African dinosaur (and one of the world's earliest) whose neighbors lived in Brazil.
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Tiny 'immortal' crab entombed in amber discovered in a first of its kindA fossil crab was discovered perfectly preserved in Burmese amber.
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Rare 'triple-dip' La Niña could bring another year of intense hurricanes and drought to the USThe cooler climate pattern is predicted to persist for the third winter in a row, bringing an increased risk of powerful hurricanes to the eastern U.S. and flooding to Australia.
