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Countdown to catastrophe: Doomsday Clock moved closer to midnight
(Reuters) - Rising threats from climate change and nuclear arsenals prompted the scientists who maintain the Doomsday Clock, a symbolic countdown to global catastrophe, to move it two minutes closer to midnight on Thursday, its first shift in three years. The Doomsday Clock, devised by the Chicago-based Bulletin of the Atomic Scientists, now stands at three minutes to midnight, or doomsday. It has been set as close as two minutes to midnight, in 1953 when the United States tested a hydrogen bomb, and as far as 17 minutes from midnight, in 1991 as the Cold War expired. "Today, unchecked climate change and a nuclear arms race resulting from modernization of huge arsenals pose extraordinary and undeniable threats to the continued existence of humanity," Bulletin Executive Director Kennette Benedict told a news conference. Read More »
Gripping Tale: Hominin Hands Hold Clues to Tool Use
This capability depends not only on the extraordinarily powerful human brain, but also the strength and dexterity of the human hand. In new research, the scientists looked at a major factor behind the power and precision of the human grip, which is the structure of the metacarpals, the bones in the palm. "The styloid process is one of the key features of a suite of morphological characteristics of the human hand that is linked to forceful use of the thumb during tool use," said study co-author Tracy Kivell, a paleoanthropologist at the University of Kent in England. Previous research has suggested that this styloid process was found only in members of the human lineage, which all belong to the genus Homo. Read More »
Huge Milky Way Gas Bubbles Clocked at 2 Million Mph
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China and Europe Will Team Up for Robotic Space Mission
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Surprise! Fish Lurk in Antarctica's Dark Underworld
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Melting Glaciers Pose a Carbon Menace
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Why Rain Gives Off That Fresh, Earthy Smell
The phenomenon was first characterized (as the familiar smell after a light rain) by two Australian scientists in 1964, but until now, researchers didn't understand the physical mechanism behind it. "They talked about oils emitted by plants, and certain chemicals from bacteria, that lead to this smell you get after a rain following a long dry spell," Cullen Buie, an assistant professor of mechanical engineering at the Massachusetts Institute of Technology in Cambridge, said in a statement. Read More »
Art embraces science in new British play 'Oppenheimer'
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Staying Home & Watching TV May Reduce Flu Spread
Staying at home and watching TV during a flu epidemic may actually reduce the spread of the disease, according to a new study of the 2009 "swine flu" epidemic. Researchers analyzed the television-viewing habits of people in central Mexico during spring 2009, when that year's H1N1 flu epidemic began. At that time, officials in Mexico City implemented measures to reduce people's contact with one another (a public health strategy called "social distancing"). They closed public schools and canceled large public events. Read More »
Human 'Atlas' Reveals Where Proteins Reside in the Body
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Can't Exercise for 30 Minutes Today? Any Activity Is Better than None
Health officials recommend that people get 150 minutes of moderate exercise per week, but some researchers argue that this recommendation may set the bar too high for some people, and that guidelines should instead focus on getting people to be just a little bit more active. The World Health Organization says that people are sufficiently active if they get at least 30 minutes of moderate physical activity a day, five days a week, or more than 20 minutes of vigorous physical activity a day, three times a week (or an equivalent amount of exercise). However, more than a third of adults worldwide don't meet these physical activity guidelines, and some people may be discouraged by the recommendations, especially if they are typically sedentary, said Philipe de Souto Barreto, of the University Hospital of Toulouse in France. Although the WHO recommendations are indeed linked with health benefits, a number of studies have now shown that getting less than the recommended level of physical activity still provides health benefits, compared with being completely sedentary, de Souto Barreto said. Read More »
NASA Finds Mysterious Bright Spot on Dwarf Planet Ceres: What Is It?
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Showing posts with label Can't Exercise for 30 Minutes Today? Any Activity Is Better than None. Show all posts
Showing posts with label Can't Exercise for 30 Minutes Today? Any Activity Is Better than None. Show all posts
Wednesday, January 28, 2015
NASA Finds Mysterious Bright Spot on Dwarf Planet Ceres: What Is It?
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