An unmanned U.S. Predator drone flies over Kandahar Air Field in southern Afghanistan on Jan. 31, 2010. Drones have become the U.S. weapon of choice in the fight against terrorism. But as the technology of this new form of warfare improves, so do concerns about how others will use it in the future.
Without question, drones have become the U.S. weapon of choice in the fight against terrorism. Counterterrorism officials say they've come to rely on the pilotless aircraft for their surveillance capability and what officials say is precision targeting. That reliance has led to greater use in the past couple of years, especially in Pakistan and Yemen.
John Bellinger, a State Department legal adviser during the George W. Bush administration, says there are increasing concerns about the frequency of drone attacks.
When wildfires swept across Australia in February 2009, this photo of a firefighter sharing his water with an injured koala captured hearts around the world. The koala later died — not of fire-related injuries, but of chlamydia. Koalas in Australia are suffering from an epidemic of chlamydia, says Dr. Barbara Natterson-Horowitz. "There's no such thing as safe sex in the wild."
Credit Mark Pardew / AP
Cardiologist Barbara Natterson-Horowitz has worked at the UCLA Medical Center for more than 20 years. She is also a cardiac consultant for the Los Angeles Zoo.
Credit Joanna Brooks /
Science journalist Kathryn Bowers writes about health, biology and evolution. She teaches writing at UCLA.
When Dr. Barbara Natterson-Horowitz was asked to treat an exotic little monkey with heart failure at the Los Angeles Zoo, she learned that monkeys can suffer heart attacks from extreme stress — just like humans. That's when the cardiologist realized she'd never thought to look beyond her own species for insights into disease.
When we asked whether the Occupy movement has "crashed or just begun," "Rock Trimlove" took issue with our image of a protester in the Guy Fawkes mask, pointing out that the mask was worn by hacker group Anonymous "long before the 'Occupy' movement began." Ultimately, however, the commenter found the picture to
Audience members listen to President Obama speak about immigration reform in El Paso, Texas, in May 2011. The Obama campaign is wooing Hispanics ahead of the November elections, but the president's deportation policy is being criticized by immigrant advocates.
A 2009 London art installation, Super K Sonic Booum, by Nelly Ben Hayoun replicated a neutrino detector, allowing the public to ride in a boat accompanied by the physicists working on the Super-Kamiokande in Japan.
We're a few days late on this news, but because we've focused on neutrinos that may have moved faster than the speed of light before, we thought it only fair to bring you the news:
The team of Italian scientists running an experiment called OPERA, who said they had clocked neutrinos moving faster than light, have come to terms with their findings: Their experiment does not challenge a very basic tenant of physics.
Voters in southeastern Arizona go to the polls Tuesday in a special election to fill the rest of the congressional term of former Rep. Gabrielle Giffords.
Giffords, a Democrat, resigned in January, a year after she was critically wounded in a shooting rampage. Running to fill the remaining six months of her term are her former aide, Ron Barber, and Republican Jesse Kelly, a businessman and Iraq War veteran.
The special election has echoes of the 2010 congressional campaign in the Tucson-based 8th Congressional District.
Rep. Charles Rangel greets supporters after a press conference at Frederick Douglass Circle in New York on May 3.
Credit Andy Jacobsohn / MCT/Landov
New York state Sen. Adriano Espaillat campaigns on the corner of 110th Street and Lexington Avenue in New York's Harlem in May. Espaillat is running for the incumbent Rangel's seat in what is now the 13th Congressional District.
Credit Andy Jacobsohn / MCT/Landov
Clyde Williams takes a break from canvassing in Manhattan's Harlem neighborhood on May 3. Williams is also running for Rangel's seat.
In Harlem, a legendary congressman — one of the most influential black politicians in modern history — faced a difficult re-election as allies backed his younger opponent in demanding a changing of the guard.
That was in 1970, when challenger Charles Rangel defeated Rep. Adam Clayton Powell Jr., a mythic figure undone by scandal and frustrated constituents.
Now, 42 years later, Rangel is the iconic lawmaker contending with perhaps his toughest re-election against challengers from within his own party who say his time has passed.
In a study (pdf) released today, the Federal Reserve reports that Americans saw a record drop in their wealth between the years 2007 to 2010. Driven primarily by plummeting home values, families' median net worth dropped 38.8 percent, to levels last seen 18 years ago.