Saturday, August 15, 2009

Wobbles in Earth’s tilt helped end ice ages

August 15, 2009

A team of scientists has found new evidence which indicates that wobbles in the Earth’s tilt were responsible for the global warming episodes that helped bring the planet out of prehistoric ice ages. According to a report by ABC News, the finding is the result of research led by Dr Russell Drysdale of the University [...]

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‘Nanospears’ could lead to more efficient solar cells

August 15, 2009

Researchers at Missouri University of Science and Technology have developed microscopic, spear-shaped zinc oxide crystals on a surface of single-crystal silicon, which may be used to make more efficient solar cells. According to Dr. Jay A. Switzer and his colleagues, inexpensive process could also lead to new materials for ultraviolet lasers, solid-state lighting and piezoelectric [...]

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Helium-3 on Moon may be a new source for nuclear energy

August 15, 2009

After circling the Moon for nearly 18 months, China’s Chang’e 1 spacecraft has successfully achieved four scientific targets that include detection of helium-3, a crucial element for nuclear fusion, which may provide humans with millions of tons of nuclear energy in the future. The identification of helium-3 came about by the exploration of the soil [...]

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US building tech tools to foil online censors

August 15, 2009

The US agency behind Voice of America said on Friday it is working on ways to slip news past tough Internet blockades in countries such as China and Iran. The Broadcasting Board of Governors (BBG) confirmed that it is crafting “feed over email” software capable of turning popular Web-based email services such as Gmail, Yahoo! [...]

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We have a ‘right to starlight’: astronomers

August 15, 2009

The public’s “right to starlight” is steadily being eroded by urban illumination that is the bane of astronomers everywhere, the International Astronomical Union said on Friday. The body, which wrapped up an 11-day general assembly in Rio de Janeiro that attracted galaxy-gazers from around the world, argued that authorities should use more unobtrusive lighting in [...]

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Google users search more, very loyal: study

August 15, 2009

Search market leader Google Inc holds greater loyalty among its users, who conduct more searches a month than those on Yahoo! and Microsoft, new data issued on Friday showed, posing a challenge for the new team of rivals to Google. While Yahoo! Inc and Microsoft Corp lag far behind Google in overall search share, their [...]

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‘Super Planetary Nebulae’ discovered

August 15, 2009

A team of scientists in Australia and the United States has discovered a new class of object which they call “Super Planetary Nebulae.” Planetary nebulae are shells of gas and dust expelled by stars near the end of their lives and are typically seen around stars comparable or smaller in size than the Sun. The [...]

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