Articles with the keyword: 


Study says eyes evolved for X-Ray vision
sea-maid submitted, created time 4 months 1 week (esciencenews.com)
The advantage of using two eyes to see the world around us has long been associated solely with our capacity to see in 3-D. Now, a new study from a scientist at Rensselaer Polytechnic Institute has uncovered a truly eye-opening advantage to binocular vision: our ability to see through things. Most animals — fish, insects, reptiles, birds, rabbits, and horses, for example — exist in non-cluttered environments like fields or plains, and they have eyes located on either side of their head 
CT scans shown to cause cancer
jane2007 submitted, created time 1 year 1 week (www.time.com)
The radiation from a CT scan, or computed tomography, actually has been shown to cause cancer — quite a bit of it. A recent report, published in November in the New England Journal of Medicine suggests that the radiation from current CT-scan use — estimated at more than 62 million CT scans per year in the U.S. (up from 3 million in 1980) — may cause of as many as 1 in 50 future cases of cancer. It's a serious charge. 
\ 1
\