A new study offers intriguing insights into the biology of human running speed. The study identifies the critical variable imposing the biological limit to running speed, and projects how the biological limits might be pushed beyond speeds achieved by Bolt to perhaps 35 or even 40 miles per hour.
A team of scientists has developed what is believed to be the first artificial hand that has feeling. It has been attached to the arm of a 22-year-old man who lost his own hand through cancer. Researchers say it works by connecting human nerve endings with tiny electronic sensors.