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Oldest-known stone tools pre-date Homo

Scientists working in the desert badlands of northwestern Kenya have found stone tools dating back 3.3 million years, long before the advent of modern humans, and by far the oldest such artifacts yet discovered. ...

dateMay 20, 2015 in Archaeology & Fossils
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Working out in artificial gravity

Astronauts on the International Space Station (ISS) have a number of exercise options, including a mechanical bicycle bolted to the floor, a weightlifting machine strapped to the wall, and a strap-down treadmill. ...

dateJul 02, 2015 in Space Exploration
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Putting the squeeze on a cell's nucleus

Nuclear membranes protect genes—life's most precious cargo—but little is known about why they function in different tissue types. For instance, nuclei in brain cells tend to be soft and pliable while ...

dateJun 16, 2015 in Cell & Microbiology
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Scientists out for dinosaur blood

Scientists said Tuesday they have discovered what appear to be red blood cells and collagen fibres in dinosaur bones, a find that may boost prospects of prising organic remains from a much wider range of ...

dateJun 09, 2015 in Archaeology & Fossils
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