Scientists today announced the discovery of the oldest fossil skeleton of a human ancestor. The find reveals that our forebears underwent a previously unknown stage of evolution more than a million years before Lucy, the iconic early human ancestor specimen that walked the Earth 3.2 million years ago.
The battle against AIDS is one of the holy grails of biomedical research, second only to curing cancer and undoing aging itself. Now some scientists have reactivated ancient genetic defenses against retroviruses (combining the plots of at least three science fiction movies and two archeological-horror action flicks), rediscovering something even our sickened cells have forgotten.
Researchers at the University of Utah have developed a way to use wireless signals to detect movement through solid walls and doors.
This month I have a tasty collection of free computer science courses. All the courses have videos included.
“Over the years we’ve developed a good understanding of them,” Smith said. “It’s no longer a mystery, but still very spectacular.”
Since man first touched the moon and brought pieces of it back to Earth, scientists have thought that the lunar surface was bone dry. But new observations from three different spacecraft have put this notion to rest with what has been called “unambiguous evidence” of water across the surface of the moon.
Dr. Luckey predicted in his paper at the 1999 American Nuclear Society annual meeting in Boston that if the American population received a supplemental radiation dose through the public health service of about 55 mSv, 49 % of the cancer deaths of the US population (about 200,000 Americans) could be prevented every year.
