| Dec 20, 2013
In 2012, the American Dental Assn. updated its guidelines for dental X-rays, including this caveat:
"Radiographs can help the dental practitioner evaluate and definitely diagnose many oral diseases and conditions. However, the dentist must weigh the...
| Nov 29, 2013
| 10:05 AM
A bright black hole in the Pinwheel galaxy has been shining us on, astronomers say – this intergalactic trickster puts out light like a big black hole but it’s really quite tiny. M 101 ULX-1, described in the journal Nature, may force...
| Nov 21, 2013
| 1:10 PM
Astronomers have chronicled a record-setting burst of gamma rays from the violent death throes of a relatively nearby massive star that imploded into a black hole. The duration of the event -- on the order of hours -- as well as the number of photons...
| Nov 13, 2013
| 6:45 PM
Has a black hole mystery just been solved?
Writing in the journal Nature, a team of scientists said it found traces of nickel and iron in the powerful jets shooting out of black hole candidate 4U 1630-47, a small black hole just a few times the mass...
| Nov 13, 2013
| 6:34 PM
A 20-year-old woman in Taiwan has achieved the dubious distinction of being the first patient known to have been sickened by a strain of bird flu known as H6N1.
The woman, who became ill in May, appears to have made a full recovery, according to a...
| Oct 12, 2013
| 12:47 PM
ST. LOUIS -- The Dodgers scratched shortstop Hanley Ramirez as well as center fielder Andre Ethier from their lineup for Game 2 of the National League Championship Series on Saturday.
Ramirez has bruised ribs after being hit by a pitch in the first...
| Oct 3, 2013
| 5:50 PM
Republican lawmakers are determined to protect the American people from what they call "socialized medicine" and what the rest of the world calls affordable and accessible healthcare.
What seldom comes up in this discussion, though, is what exactly we'...
| Sep 26, 2013
| 10:28 PM
A series of discoveries from NASA's Curiosity rover are giving scientists a picture of Mars that looks increasingly complex, with small bits of water spread around the surface and an interior that could have been more geologically mature than experts...
| Sep 20, 2013
| 2:18 PM
Scientists have discovered enormous tendrils of hot plasma emanating from the center of the Coma galaxy cluster, and you can see them for yourself in the composite first image in the photo gallery above.
The red stuff is the X-ray emission of the super-...
| Sep 7, 2013
| 7:15 PM
An injury plagued season in which Peter Bourjos spent more time on the disabled list than the active roster will end — fittingly, it seems — with surgery.
The Angels center fielder, one of the team's top hitters in April and June, will...
| Jul 25, 2013
| 2:37 PM
Thursday's Google Doodle honors Rosalind Franklin, the pioneering scientist famous for taking some of the first and best images of DNA in the early 1950s, and for being screwed over by the sexism of her time.
Just 37 years old when she died of...