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Barack Obama accepted the Democratic nomination in a packed stadium tonight and laid out his credentials to take on and beat Republican candidate John McCain in the fall election.

The Weather Channel: Local Weather Outlook
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Partly Cloudy, and 46 ° F. For more details?
BiologyNewsNetBiology


he eyes of some mammals have evolved to point in the same direction. While animals with forward facing eyes lose the ability to see what's behind them, they gain X-ray vision, which makes it possible for them to see through the clutter in the world. Credit: Rensselaer/Changizi
The advantage of using two eyes to see the world around us has long been associated solely with our capacity to see in 3-D. Now, a new study from a scientist at Rensselaer Polytechnic Institute has uncovered a truly eye-opening advantage to binocular vision: our ability to see through things.