We drink a lot of diet soda in this country, so when researchers disavowed a study linking aspartame to rare cancers just before publication, we took notice. The whole issue illustrates what makes scientific studies so confusing to the public. We'll keep you posted on this.
Freezing women's eggs to treat infertility is no longer an experimental procedure, according to the American Society for Reproductive Medicine. Still, the procedure remains costly and controversial and many questions remain about the effectiveness and safety of using long-term egg-freezing.
Scientists have made changes in human DNA that can be passed down from one generation to the next. The researchers say they took the step to try to prevent women from giving birth to babies with genetic diseases. But the research is raising a host of social and moral questions.
We're right on the verge of wiping out polio globally. But to do that, children in remote regions of Pakistan and Afghanistan must be inoculated with the heat-sensitive vaccine — not once, but multiple times. Time to call in the donkeys.
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