Two Israeli scientists may have created the catalyst for a medical revolution with their new project: a tiny, 1-millimeter-diameter robot which is capable of crawling through human veins and arteries. The bot can cling to vessel walls using small, powerful arms which protrude from a hub in its center. Manned control is accomplished by using a magnetic field outside of the body, and the robot is able to swim against the flow of blood, as well as squeeze through a variety of arterial openings. Right now the doctors don't know what the medical applications might be, though they speculate that a large number of the bots could be used to fight certain types of cancer. Other ideas on the table include using the bots to exact revenge on anyone opposing their crazy ideas.