Reviewed By Laura J. Martin, MD. May 28, 2010 (New Orleans) -- If your child insists his positive drug test results are a mistake, there's a chance he could be telling the truth. Drug tests generally produce false-positive results in 5% to 10% of cases and false negatives in 10% to 15% of cases, new research shows.
According to Fox News, MITâs cheetah robot can now jump over obstacles up to 18 inches tall, which is more than half the robotâs height. âOur goal is to use this kind of robot to save lives in a disaster situation,â explains Professor Sangbae Kim.
(It looks a lot like a leopard, but you can tell a cheetah by the bilateral, teardrop-shaped stripes running from either side of its nose to its eyes.) It's small and lightweight, usually less than 3 feet (1 meter) tall and about 4 feet (1.2 meters) long [source: Defenders of Wildlife ].