September 5, 2013 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.
August 20, 2013 By precisely measuring footfalls, scientists discovered that healthy human feet bend and flatten much like the feet of tree-dwelling apes. And the flex in one person's foot can vary a lot from one step to the next.