October 28, 2013 In a new book, billionaire investor Warren Buffett and his son and grandson discuss how to feed a growing planet. "We've been fortunate to make a whole lot more money than anybody can spend intelligently on themselves, so the object is to spend it intelligently on the rest of the world," says the senior Buffett.
October 27, 2013 Just a few decades ago, polio was crippling more than a thousand children each day. Now the paralyzing virus remains endemic to only three countries. A timeline shows how polio went from one of the most feared illnesses to a disease on the ropes.
October 24, 2013 Known as the "affliction with little dragons," Guinea worm is a nasty parasite that can grow up to 3 feet inside a person. A decades-long campaign to eliminate the worm is starting to pay off. There were only about 500 cases worldwide in 2012, and 89 cases in the first half of 2013.
October 23, 2013 The news that a baby born HIV-positive in Mississippi stayed HIV-free even though her mother stopped giving her anti-retroviral drugs sparked skepticism earlier this year. But a new report says that the girl is still virus-free at age 3. This could jumpstart a global study on super-early treatment of HIV-positive newborns.
October 23, 2013 A cholera outbreak in Mexico has been traced to the same strain that first appeared in Haiti three years ago. It has appeared in the Dominican Republic and Cuba, too. So far nearly 9,000 people have died in the four countries, and health authorities think it will spread farther in the Americas.
October 21, 2013 Syria used to have one of the highest rates of polio vaccinations in the region. But since the civil war began, rates have plummeted. Now the crippling virus has likely returned to the country, health officials say. Initial tests indicate that polio has paralyzed at least two children.
October 18, 2013 Researchers say naturally occurring viruses that target bacteria might one day help help treat human infections with germs that are resistant to antibiotics. The research is still in the early stages, and there are quite a few challenges to overcome before a treatment can even be tested in humans.
October 18, 2013 The majority of new HIV infections among gay men in the U.S. these days occur within committed couples. So researchers are piloting a strategy that's been successful in Africa. Gay couples in several cities have tried it and say the benefits are unexpected.
October 17, 2013 It turns out that the mosquito-borne illness has been hanging around Houston longer than thought. A look at blood and spinal fluid samples collected from patients a decade ago found that quite a few of them had been sick with undiagnosed dengue fever.
October 14, 2013 TURNSTYLEA new movie documents how an Indian entrepreneur created a cheap machine to make sanitary napkins for rural women on the subcontinent. Women whose self-help groups buy Arunachalam Muruganantham's machine can make more than a dollar a day — close to a global poverty line threshold — selling the pads.
October 9, 2013 A cholera outbreak in Haiti was likely triggered by United Nations peacekeeping forces stationed there after a 2010 earthquake. A human rights groups wants the U.N. to take responsibility for the cholera outbreak and to compensate Haitian families.
October 8, 2013 Bombs targeting polio vaccinators have threatened the global effort to stamp out the disease once and for all. The attacks are likely to continue, researchers warned, unless there's a change in eradication strategy toward local action.
October 6, 2013 Intrauterine devices are more than 99 percent effective in preventing pregnancy — and they work for years. But misnomers about side effects and high initial costs have kept many women in the U.S. from using them. Health organizations and private companies are looking for ways to change that.
October 2, 2013 Scientists have figured out how DEET repels mosquitoes. The finding has led the researchers to candidate repellents that are safer and cheaper than DEET and may provide new weapons against mosquito-borne scourges, such as malaria and dengue fever.