There's a growing interest in what our genes say about our health. And in recent years, quite a few companies have sprung up to help us listen with the help of personalized DNA tests.
For a few hundred dollars and a vial of spit, these companies will search your DNA for sequences that predict your physical traits, your response to certain drugs and your risk for any number of diseases.
Six years ago, we told you about a woman, identified as A.J., who could remember the details of nearly every day of her life. At the time, researchers thought she was unique. But since then, a handful of such individuals have been identified. And now, researchers are trying to understand how their extraordinary memories work.
A month ago the results of a successful cholera vaccine project in Haiti became available. Now the World Health Organization is calling for the establishment of a global stockpile of the vaccine to respond to outbreaks like Haiti's.