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The wobbling of Earths axis causes the location of the equinoxes to occur earlier every year. Here, the location of the sun at the vernal equinox (March 21) is shown to drift over a 6000 year period. Credit: Kevin Heagen (via Wikipedia)
The changing location of the vernal equinox.
Matt Daniel's WeatherGlobe
Tsunami warning issued after 8.2 quake in Chile
Blogus scientificus by Alex Reshanov
Do microbes spoil food to avoid sharing?
Earth Trekker by Deanna Conners
This date in science: Landslide at Bingham Canyon Mine