Although tuberculosis is declining around the world, drug-resistant strains of <em>Mycobacterium tuberculosis</em> are on the rise.
We don't know too much about a Nepalese man who's in medical isolation in Texas while being treated for extensively drug-resistant tuberculosis, or XDR-TB, the most difficult-to-treat kind. Health authorities are keen to protect his privacy.
But we do know that he traveled through 13 countries — from South Asia to somewhere in the Persian Gulf to Latin America — before he entered the U.S. illegally from Mexico in late November. He traveled by plane, bus, boat, car and on foot.
John Berthelot, top, and Hosea Wilson, bottom right, release the nets from their shrimp boat, Monday, May 3, 2010, at the Venice Marina in Venice, La.
Credit Eric Gay / AP
Think your job is bad? Quit whining, unless you're a shrimper in the Gulf of Mexico.
Commercial fishermen have the highest rate of on-the-job fatalities of any occupation in the country — 116 deaths per 100,000 workers in 2010. A majority of the deaths happen when a fishing vessel sinks. About a third occur when someone goes overboard.
Main Street Station casino security staffers Jim Daugherty (left) and James Boles show off an automated external defibrillator in Las Vegas in 1997. Back then, the idea of putting the devices in casinos to save lives seemed like a long shot.
Credit Lennox McLendon / AP
If someone's heart suddenly stops beating, a quick shock can be a lifesaver.
Scientists say that understanding how the cocktail party effect works could help people who have trouble deciphering sounds in a noisy environment. Guests make it look easy at a Dolce and Gabbana Lounge party in London in 2010.
Scientists are beginning to understand how people tune in to a single voice in a crowded, noisy room.
This ability, known as the "cocktail party effect," appears to rely on areas of the brain that have completely filtered out unwanted sounds, researchers report in the journal Neuron. So when a person decides to focus on a particular speaker, other speakers "have no representation in those [brain] areas," says Elana Zion Golumbic of Columbia University.