April 24, 2013 Concerns about the flu have intensified as the cases and fatalities mount. Transmission of the virus between birds and humans appears to happen fairly easily. It's unclear whether it can spread from one person to another.
April 19, 2013 An international team of disease detectives are in China to investigate an outbreak of a new strain of bird flu, H7N9. The biggest puzzle right now is where these infections are coming from, as testing poultry has turned up very few infected birds.
April 17, 2013 A new strain of bird flu has sickened 82 people and killed 18 in China. But many people who have caught the H7N9 flu say they hadn't been near poultry or other birds. So what's fueling the outbreak of the virus?
April 16, 2013 Even very poor countries, like Ethiopia and Nepal, are making rapid progress against malnutrition in babies and young kids. A report from UNICEF finds that while stunting in kids worldwide is prevalent, it has dropped by a third in the past two decades.
April 14, 2013 Health officials in China say they've confirmed 11 new bird flu diagnoses, bringing the number of H7N9 infections to 60, according to the official Xinhua news agency. The virus, which began in eastern China, has now sickened at least one person in Beijing, and two in the central province of Henan.
April 14, 2013 "The top priority is diagnosis — the capability to be able to pick up this virus, should it emerge outside of China," says virologist John McCauley. Flu researchers are getting started on creating a vaccine, but there are still many unknowns.
April 12, 2013 Infections with a new flu strain have increased, with three to five cases reported daily. The virus, carried by birds, doesn't appear to spread between people. Still, health officials in the U.S. are preparing to screen travelers and develop a vaccine.
April 11, 2013 A prominent male chin, thought to be a marker for virility, is one of the characteristics that's part of the so-called universal facial attractiveness hypothesis. But a look at chins from around the world raises doubts.
April 8, 2013 There could be as many as 400 million dengue infections worldwide each year, making it more common than malaria, according to a new study. One reason for the huge increase in estimated infections is that dengue has been spreading far and wide to regions outside the tropics.
April 2, 2013 About 1.2 million people die prematurely every year in China from exposure to outdoor air pollution. Smog has dogged the country as it grows at an explosive rate and burns huge quantities of fossil fuels. But there are signs that the government is beginning to take the issue more seriously.
April 1, 2013 Novartis lost its bid to patent one of its cancer drugs. Indian authorities say the drug is too much like an earlier version. Novartis says the ruling may dampen drug companies' willingness to work in India. Others say the ruling will help make less expensive drugs available to the world's poor.