What is "blood doping," and why does it matter?

Any time someone breaks a record, people inevitably bring up the possibility that they had some illegal enhancements. Just yesterday, gold medalist Ye Shiwen was accused of "blood doping" to improve her performance. You may be familiar with steroids and other drugs — but what on Earth is "blood doping?" And why would… » 8/01/12 7:00am 8/01/12 7:00am

How a 43,000-Year-Old Wooly Mammoth Could One Day Save Your Life

Heart and brain surgeries are called "hypothermia-dependent" procedures because doctors often have to lower their patients' temperatures during surgery. The thing is, human blood doesn't transport oxygen as well at cold temperatures. Surgeons rely on synthetic blood substitutes to help the patient's body cope. » 9/14/11 1:18pm 9/14/11 1:18pm