Regulators say R.J. Reynolds Tobacco Co. must stop selling four kinds of cigarettes because the Food and Drug Administration said the company had failed to show they aren't riskier than cigarettes on the market before mid-February 2007.
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Dr. Frances O. Kelsey of the U.S. FDA, who is credited with keeping the birth-deforming drug, Thalidomide, off the U.S. market, is shown in an Aug. 1962 photo. Kelsey died on Friday at age 101.
Food on display at a Miami supermarket. Advocacy groups say they're concerned that Americans are consuming foods with added flavors, preservatives and other ingredients that have never been reviewed by regulators for immediate dangers or long-term health effects.
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Along with sperm, the in vitro procedure adds fresh mitochondria extracted from less mature cells in the same woman's ovaries. The hope is to revitalize older eggs with these extra "batteries." But the FDA still wants proof that the technique works and is safe.
Chris Nickels for NPR