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.
Cheetahs are like track stars, with every part designed for speed. When they spot prey they can accelerate from 0 to 60 mph in only three seconds. Long legs, a flexible collar bone and a springy backbone that bends in both directions help cheetahs take long, ground-covering strides.