An aerial view shows the flooded neighborhood of Juana Matos in the aftermath of Hurricane Maria in Catano, Puerto Rico, on Friday. The island could be without power for months, complicating relief efforts.
Ricardo Arduengo/AFP/Getty Images
Sen. Lindsey Graham, second from left, speaks as Sen. John Barrasso, from left, Sen. Bill Cassidy, Sen. John Thune and Senate Majority Leader Sen. Mitch McConnell listen during a news briefing Tuesday.
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Kathy Niakan, a developmental biologist at the Francis Crick Institute in London, used the CRISPR gene editing technique to find out how a gene affects the growth of human embryos.
Courtesy of The Francis Crick Institute
Affordable Care Act navigators helped guide those looking for insurance during an enrollment event at San Antonio's Southwest General Hospital last year. Beyond helping with initial enrollment, navigators often follow up with help later, as an applicant's income or job status changes.