Archive: 21/03/2011

Lizard uses UV signals to ward off rivals

(PhysOrg.com) -- We’re all familiar with different animal species using a variety of strategies to attract a mate or chase off an aggressor or a rival. For birds, it’s often a dazzling display of plumage or a deafening ...

dateMar 21, 2011 in Plants & Animals
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Want to silence a gene? Pull here

(PhysOrg.com) -- Simply stretching DNA can silence a gene, scientists at the UA have discovered. The finding could point to a previously unknown gene control mechanism.

dateMar 21, 2011 in Biotechnology
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Rivers buckle under pressure from climate, dams

Climate change is likely to intensify the alarming rate of degradation of the world’s rivers and wetlands unless water resources are better managed, according to a special issue of the international scientific journal ...

dateMar 21, 2011 in Environment
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The importance of being magnetized

Despite its magnetic field, Earth is losing its atmosphere to space at about the same rate as planets that lack this protective barrier against the solar wind. Scientists now are beginning to question whether magnetic fields ...

dateMar 21, 2011 in Space Exploration
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The skull of extinct birds revealed

Birds are the most diverse clade on the planet, and the skull of the living bird is one of the most highly modified and morphologically variable regions of their skeleton. The large diversity of enantiornithine birds (a group ...

dateMar 21, 2011 in Archaeology & Fossils
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Doubly special relativity

General relativity, Einstein’s theory of gravity, gives us a useful basis for mathematically modeling the large scale universe – while quantum theory gives us a useful basis for modeling sub-atomic particle physics ...

dateMar 21, 2011 in General Physics
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