Blood tests and chemical analysis are ways to figure out exposure to a toxin, though it can take a day or longer for results. To speed up results, biochemists have developed a microscopic system that can identify chemicals in seconds. Researchers at Georgia tech are using micro lenses, so small that millions fit on one-inch square plate. The micro lenses can be "turned" to bind to a specific chemical. When antigens are detected, the lens swell and turn from "on" to "off," all easily observed through a microscope.
You might be one of the blessed few who never has to diet. But a word to the wise, exercise physiologists say you still need to exercise or risk a glut of bad cholesterol. Brunel University compared thin exercisers and those who were naturally thin but didn't exercise. The regular exercisers had healthy cholesterol levels. However the thin, non-exercisers clocked-in with borderline high cholesterol. The doctors say remember that while exercise is commonly linked to weight loss, it's also a key way to keep cholesterol in check.
If you watch a surgery, you can almost imagine the surgeon asking for a clamp. In one surgical suite, the surgical assistant is a robot instead of a human. New York-Presbyterian hospital is using the Penelope Surgical Instrument Server in operating rooms. Penelope responds to voiced audio requests for surgical tools, picks them up with a magnetic gripper, and then hands them to the surgeon. A gesture that frees up nurses to do other things in the O.R. The robot assistant doesn't handle sharp tools, only those with blunt ends.