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If you can't squish 'em, join 'em: Scientists build cockroach robot

After running roaches through tunnels that were only as high as two pennies stacked flat, researchers at UC Berkeley have designed a cockroach robot that’s able to squeeze through tiny spaces at blazing speeds. Such a roach bot, described in the Proceedings of the National Academy of Sciences,...

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Space

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  • Rapper B.o.B. says the Earth is flat; Neil deGrasse Tyson drops diss track in response

    Rapper B.o.B. says the Earth is flat; Neil deGrasse Tyson drops diss track in response

    Spoiler alert: The Earth is not flat. That said, the topic is certainly a fresh one for Twitter beef. Scientists have recognized the curvature of the Earth for more than 2,000 years. But rapper B.o.B. challenged that view on Sunday when he began tweeting images and diagrams that he said were proof...

  • 'Pluto killer' calls on other astronomers to help find a ninth planet

    'Pluto killer' calls on other astronomers to help find a ninth planet

    The scientists who brought you "Planet Nine" want you — and your giant fancy telescope — to help catch the mysterious world in action. This week, two Caltech scientists announced that an unseen giant planet some 10 times the mass of Earth may lie beyond the Kuiper belt, the icy ring of debris where...

  • The best places to see this weekend's five-way planetary alignment

    The best places to see this weekend's five-way planetary alignment

    Keep your eyes on the skies, stargazers! Starting Saturday morning, five planets will be visibly aligned in a cosmic assembly that hasn't happened in more than a decade. As you can see in the diagram above, the string of planets includes Mercury, Venus, Saturn, Mars and Jupiter. The only planets...

Environment

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Nutrition & Obesity

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  • New Dietary Guidelines spark intense debate among nutrition experts

    New Dietary Guidelines spark intense debate among nutrition experts

    A week after the federal government released its latest recommendations for healthful eating, the 2015-20 Dietary Guidelines have touched off a food fight. Acknowledging that the "scientific integrity" of the drafting process has been called into question, Congress has asked the National Academies...

  • Weight-loss surgery may reduce depression in some patients, study suggests

    Weight-loss surgery may reduce depression in some patients, study suggests

    For some severely obese patients, a new study hints that bariatric surgery might potentially do good for both body and mind. Patients seeking and undergoing such weight-loss procedures were more likely to suffer from depression and binge-eating than the general population -- but those with depression...

  • New Dietary Guidelines for Americans: Watch your sugar, but enjoy the eggs and coffee

    New Dietary Guidelines for Americans: Watch your sugar, but enjoy the eggs and coffee

    For all you health-conscious eaters who have your eggs and coffee with a side order of guilt, get ready to celebrate the latest government advice: It's OK to eat foods rich in cholesterol, drink as many as five cups of joe daily and enjoy a range of long-disparaged fats. That pronouncement is part...

Human Behavior

  • Social contagion: Women more likely to yawn in response to others, study says

    Social contagion: Women more likely to yawn in response to others, study says

    Italian scientists who documented humans interacting in everyday situations have found that women are more susceptible to catching the urge to yawn from others than men are. The findings, published in the journal Royal Society Open Science, may shed light on this social contagion and on the differences...

  • What a 10,000-year-old massacre can tell us about the origins of human violence

    What a 10,000-year-old massacre can tell us about the origins of human violence

    On the banks of an ancient lagoon in Kenya, researchers have found evidence of a massacre that occurred 10,000 years ago. The skeletal remains of 12 adult victims discovered in Nataruk, near Lake Turkana, tell a grim story of merciless violence by one group of hunter-gatherers against another --...

  • Access to safer guns is favored by most in U.S., poll finds

    Access to safer guns is favored by most in U.S., poll finds

    Nearly 6 in 10 Americans — including 42.8% of gun owners — say that if they were to buy a new firearm, they would choose one equipped with technology that prevents it from being fired by an unauthorized user, a new national survey has found. The survey suggests an openness to so-called smart guns,...

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