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15 February 2008, for National Geographic News Antarctica's native marine life is under threat from invasions of king crabs and other predators, researchers said today.
As Earth's oceans heat up because of global warming, king crabs will likely expand into waters that were previously too chilly for them to survive. |
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14 February 2008, for National Geographic News No areas of the world's oceans remain completely untouched by humanity's influence, according to a new study. Every area of the oceans is feeling the effects of fishing, pollution, or human-caused global warming, the study says, and some regions are being affected by all of these factors and more. |
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7 February 2008, for National Geographic News Growing crops to make biofuels may accelerate global warming, not slow down its effects, a new study says. When farmers clear native ecosystems such as forests or grasslands to grow crops, this gives off substantial amounts of carbon dioxide, the primary greenhouse gas that fuels climate change. |
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7 February 2008, for New Scientist A knee-mounted brace that generates electricity from a person's stepping action, and requires little extra effort, brings new meaning to the phrase "power walk." The generator could be used to power cellphones, prosthetic limbs, or medical implants, researchers argue. |
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31 January 2008, for National Geographic News Impoverished farmers in South Asia and southern Africa could face growing food shortages due to climate change within just 20 years, a new study says. Increasing levels of greenhouse gases, including carbon dioxide, are heating up the planet, with droughts and shifting rainfall patterns predicted for many parts of the world. |
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31 January 2008, for New Scientist If you gave Lego brains, you might get something like Posey, a new hands-on way of interacting with computers developed at Carnegie Mellon University, Pittsburgh, US. When Posey's plastic pieces are snapped together, an exact copy of the construction appears on a computer screen. Every twist of, say, a stick figure's arm is mirrored in 3D modelling software. |
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30 January 2008, for New Scientist Strands of DNA can be programmed to assemble nanoparticles into 3D structures, pointing towards a new way to engineer materials from the bottom up. Two research groups have demonstrated the technique, using squid-like gold nanoparticles with "arms" made of DNA. |
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24 January 2008, for New Scientist Passport and ID card photos could be more effective if they were averages of several snapshots, say researchers who have shown that approach allows facial recognition software to spot familiar faces as well humans do. Psychologists Rob Jenkins and Mike Burton of the University of Glasgow, UK, were inspired by studying how we recognize familiar faces. |
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21 January 2008, for National Geographic News A rare volcanic eruption punched through Antarctica's ice sheet more than 2,000 years ago, scattering ash across the frozen landscape, a radar survey has revealed. The eruption was the biggest in Antarctica in the past 10,000 years, researchers estimate. |
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14 January 2008, for National Geographic News The western part of Antarctica is shedding ice much faster today than it was just ten years ago, according to new satellite measurements. The measurements, which surveyed the coasts of nearly the entire continent, suggest that climate models underestimate how quickly Antarctica responds to ongoing global warming, said study co-author Jonathan Bamber of the University of Bristol in England. |
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