Identical Twins' Genes Are Not Identical

Identical twins are identical, right? After all, they derive from just one fertilized egg, which contains one set of genetic instructions, or genome, formed from combining the chromosomes of mother and father. But experience shows that identical twinsare rarely completely the same.

Bill Gates: Control-Alt-Delete was a mistake

The Microsoft founder says the triple-key login should have been made easier, à la Apple's Macs, but that a designer insisted on the more complicated step. We could have had a single button.

Chinese man Xiaolian grows a replacement nose on his forehead

The 22-year-old, named only as Xiaolian, has undergone treatment at a hospital in Fuzhou in Fujian province to create a replacement nose after his original became infected as a result of a car crash last year.