If we had enough time, enough brain power, the right computers, the occasional genius, is there any limit to what we can know about the universe? Or is nature designed to keep its own secrets, no matter how hard we try to crack the code? What can we never know?
Ever wondered how Dustin Hoffman's character in Rain Man quickly counted all those toothpicks on the floor? Scientists have found a region of the brain that allows us to estimate quantities at a glance. Unlike Hoffman's Ray, though, most people are accurate up to only about five toothpicks.
A satellite is scheduled to take off for the Moon Friday — carrying an instrument that could represent the future of deep space communication. Instead of sending data back to earth using radio waves, the Lunar Laser Communications Demonstration will use pulsed light waves.
Scientists looking back on last year's extreme weather events conclude that human-induced climate change didn't cause any of the events, but appears to have made some of them worse. The results are published in the Bulletin of the American Meteorological Society.
The USDA has quietly ended a ban on processed chicken imports from China. The products won't require a country-of-origin label — which means there's no way to know whether those chicken nuggets in the freezer aisle came from a country with a spotty food safety reputation.
Scientists aren't sure exactly why holes form in the hot and glowing outermost layer of gas surrounding the sun. But one theory is that the dark blotches we see on images of the sun could be the remnants of the (relatively) cool splotches called sunspots.
Kitties don't play — they hunt. And their aloof appearance has evolutionary roots. In a new book, anthrozoologist John Bradshaw explains cats' mysterious nature and looks at how the cat's relationship with humans has changed over the years.
Tuberculosis is one of the oldest diseases in human history. Signs of the bacteria have even been seen in Egyptian mummies. Now scientists find evidence that TB is much more ancient than we thought. The bacteria may have started infecting people more than 70,000 years ago, long before farming began.
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