HIV is evolving to become less deadly and less infectious, according to a major scientific study. The team at the University of Oxford shows the virus is being "watered down" as it adapts to our immune systems. It said it was taking longer for HIV infection to cause Aids and that the changes in the virus may help efforts to contain the pandemic.

The University of Texas at Austin is missing about 100 brains ? about half of the specimens the university had in a collection of brains preserved in jars of formaldehyde. One of the missing brains is believed to have belonged to clock tower sniper Charles Whitman. "We think somebody...

NASA is developing the capabilities needed to send humans to an asteroid by 2025 and Mars in the 2030s – goals outlined in the bipartisan NASA Authorization Act of 2010 and in the U.S. National Space Policy, also issued in 2010.