In November 1941, two ships crossed paths off the coast of Australia. One was the German raider HSK Kormoran. The other: an Australian warship called the HMAS Sydney. Guns were fired, the ships were damaged, and both sank to the bottom of the ocean.
In a new study published in the journal Acta Zoologica, Johan Billen of the Catholic University of Leuven (KUL), Belgium and his team report on a kind of ant that's especially evolved to kill itself in order to save the nest.
A portion of the west rim of Endeavour crater sweeps southward in this view from NASA's Mars Exploration Rover Opportunity. NASA adjusted the colors in this image. Fans of the film <em>Capricorn One</em> may want to see the <a href="http://www.nasa.gov/mission_pages/mer/multimedia/gallery/pia11508.html">original orange-tinted image</a>.
You may not have realized it, but a piece of U.S. property was recently driving around on the surface of Mars. Tens of millions of miles away from the debt crisis, the heat wave and other big events of the summer, NASA's rover Opportunity just completed a 13-mile trip to allow scientists to examine a Martian crater.