News tagged with evolution

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Galaxy growth examined like rings of a tree

(Phys.org) —Watching a tree grow might be more frustrating than waiting for a pot to boil, but luckily for biologists, there are tree rings. Beginning at a tree trunk's dense core and moving out to the soft bark, the passage ...

dateNov 01, 2013 in Astronomy
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Evolution of new species requires few genetic changes

Only a few genetic changes are needed to spur the evolution of new species—even if the original populations are still in contact and exchanging genes. Once started, however, evolutionary divergence evolves rapidly, ultimately ...

dateOct 31, 2013 in Evolution
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Mystery moss rediscovered

(Phys.org) —A botanical puzzle more than 150 years old could soon be solved, thanks to a discovery by a second-year botany student in Queensland's far north.

dateOct 18, 2013 in Plants & Animals
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Most distant gravitational lens helps weigh galaxies

An international team of astronomers has found the most distant gravitational lens yet—a galaxy that, as predicted by Albert Einstein's general theory of relativity, deflects and intensifies the light of an even more distant ...

dateOct 17, 2013 in Astronomy
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