Aug 31, 2014 — She visited Africa with her presidential parents and found her calling. Barbara Bush talks about Global Health Corps, the group she started, and shares a "tweet of advice" for her volunteers.
Aug 28, 2014 — For the first time, researchers have tracked the spread of Ebola, almost in real time, during an outbreak. The virus is quickly changing its genetic code. But it's unclear what the mutations mean.
Aug 25, 2014 — Scientists now think the entire outbreak in West Africa was triggered by one person and then the virus took off from there. Early signs pointed to a little boy in southern Guinea.
Aug 22, 2014 — Even just the word Ebola is kind of terrifying. Why? Hollywood has a lot to do with it. But Ebola outbreaks also have all the ingredients for what one psychologist calls the "dread factor."
Aug 21, 2014 — By analyzing the DNA found in 1,000-year-old mummies, scientists found evidence that sea mammals were the first to bring tuberculosis to the Americas.
Aug 21, 2014 — The World Health Organization says the official number of Ebola cases and deaths may "vastly underestimate" the scale of the outbreak. So how bad is it really?
Aug 19, 2014 — The type of Ebola erupting in West Africa is closely related to one found 2,500 miles away — the distance between Boston and San Francisco. How did the virus spread so far without anyone noticing?
Aug 18, 2014 — Using a new technology, scientists have created a vaccine for an emerging mosquito-borne virus. The vaccine was safe and produced some degree of immunity in a preliminary study.
Aug 14, 2014 — Nearly 2,000 cases have been reported, but staff in West Africa say there are likely many more. The World Health Organization is also coordinating a "massive scaling up" of the international response.
Aug 14, 2014 — Engineers have come up with an experimental technology that could make HIV prevention as easy as using a tampon. It's based on an ultrafine fabric that's thinner than a human hair.