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Vatican Pope Biden
Pope Francis shakes hands with US vice president Joe Biden as he takes part at a congress on the progress of regenerative medicine and its cultural impact, being held in the Pope Paul VI hall at the Vatican, Friday, April 29, 2016. (L'Osservatore Romano/Pool photo via AP)
Colombia Zika
An Aedes aegypti mosquito is seen through a microscope at Colombia's National Institute of Health in Bogota, Colombia, Tuesday, April 26, 2016. Margaret Honein, of the Centers for Disease Control and Prevention, CDC, said during a press conference in Colombia that apart from microcephaly, babies whose mothers have had Zika during pregnancy may eventually acquire impaired hearing or vision. (AP Photo/Fernando Vergara)
Painkiller Safety
FILE - This Feb. 19, 2013, file photo, shows OxyContin pills arranged for a photo at a pharmacy in Montpelier, Vt. The Food and Drug Administration is reconsidering whether doctors who prescribe painkillers like OxyContin should be required to take safety training courses, according to federal documents released Friday, April 29, 2016. (AP Photo/Toby Talbot, File)
Drinking Your Moisturizer
This Wednesday, April 27, 2016, photo shows a display of products sold at CAP Beauty, a wellness store with an all-things-natural approach in New York. The makeup industry is trying to convince women that looking good on the outside starts from within, but it’s unclear if the products they’re trying to hawk are safe and effective. (AP Photo/Bebeto Matthews)
Lung Transplant Road Race
This August 2013 photo provided by Eamonn Kelly shows Kelly on Newbury Street in Boston before his double-lung transplant. Born with cystic fibrosis, Kelly plans to run a 5-kilometer race on Saturday, April 30, 2016, just six months after transplant surgery. Cystic fibrosis is a deadly disease that affects the digestive system and lungs, making it difficult to breathe. (Elana Alfred via AP)