Mr. Smarty Pants Knows

George Washington's doctors essentially killed him. They drained him of large amounts of blood to "cure" what may have been strep throat.

The Neolithic dentist's drill of choice 9,000 years ago was made from flint. An international team of scientists, led by Roberto Macchiarelli of the University of Poitiers, has found drilled molars from nine adults discovered in a grave that date from 7,500 to 9,000 years ago.

The U.S. Army has relaxed its policy banning certain types of tattoos in a bid to attract new soldiers.

Bifocals may become a thing of the past. Scientists have developed prototype eyeglasses that change prescriptions with the flick of a switch. Each lens consists of two flat glass plates with a hair-thin layer of shape-shifting liquid crystal sandwiched in between.

Russia's Compass 2 satellite is expected to help make the first step in the practical forecasting of earthquakes from space.