An ultrasound zap to the testicles can stop the production of sperm, reducing overall sperm count to a level that would render males infertile, according to a new study involving rats. Further studies are still needed to test how long this new contraceptive method would last, and whether infertility could be reversed. But for the researchers studying rat and monkey testicles, the early results are pretty gratifying.
Researchers at Cambridge claim they’ve engineered the first animal with artificial information embedded in its genetic code in such a way that it generates biological molecules that have never been seen before in nature. That is, it churns out an amino acid that is wholly new, rather than one of the 20 found in natural living things.
Hundreds of millions of years ago, unicellular organisms made the leap to multicellularity, enabling what we know now as complex life and otherwise making a huge leap forward for evolution. Now, researchers have coaxed single-celled yeast into doing the same thing--in just a few weeks.
Sure, you can buy a flying car from Hammacher Schlemmer. But for truly bizarre catalog collections, turn to America's laboratory supply companies. It's a fair bet your favorite holiday catalog will not include a small-animal guillotine, for instance.
After 33 miners were discovered trapped alive deep within a collapsed Chilean gold and copper mine, authorities in Chile sought advice from NASA scientists on the best means to keep the men alive in such isolated circumstances. Now Chilean officials are getting something even better from NASA: a four-man team of physicians and scientists that is en route to Chile to advise on-site about the situation unfolding some 2,300 feet below ground.