Archive: 6/04/2015

How to train your astronauts

Training an astronaut is no easy task. Astronauts go through years of rigorous technical, health and safety training to learn simple and complex tasks for a typical four to six month mission. They develop skills in systems, ...

dateApr 06, 2015 in Space Exploration
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Human fear of spiders draws scientific focus

A fear of spiders, arachnophobia, is in our DNA. You don't learn to freeze at the site of these creatures; you're born with the fear. Even the sight of hypodermic needles and houseflies does not trigger a similar response. ...

dateApr 06, 2015 in Evolution weblog
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Lead hokes the age

Rocks do not lose their memory across Earth history, but their true ages might be distorted: Even under ultra-high temperature metamorphic conditions exceeding 1200°C, zircon retains the lead content accumulated during radioactive ...

dateApr 06, 2015 in Earth Sciences
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