Researcher Svante Pääbo, was able to extract a complete genome from this ancient human leg bone. Bence Viola/Max Planck Institute for Evolutionary Anthropology hide caption

itoggle caption Bence Viola/Max Planck Institute for Evolutionary Anthropology

Meghan, 23, began experiencing hallucinations at 19. "Driving home, cars' headlights turned into eyes. The grills on the cars turned into mouths and none of them looked happy. It would scare the crap out of me," Meghan says. Marvi Lacar for NPR hide caption

itoggle caption Marvi Lacar for NPR

Avian influenza, or bird flu, causes an infectious and contagious respiratory disease. In the lab, several scientists have made the H5N1 strain more contagious, a controversial line of research. James Cavallini/ScienceSource hide caption

itoggle caption James Cavallini/ScienceSource

When people see charts like this, they think the drug is more effective than if they just read about the data, a study finds. Source: Cornell University hide caption

itoggle caption Source: Cornell University

A doctor uses a microscrope to view a human egg during in vitro fertilization (IVF), which is used to fertilize eggs that have been frozen. Mauro Fermariello/ScienceSource hide caption

itoggle caption Mauro Fermariello/ScienceSource

An ambulance carrying Amber Vinson, the second health care worker to be diagnosed with Ebola in Texas, arrives at Emory University Hospital in Atlanta on Wednesday. David Tulis/AP hide caption

itoggle caption David Tulis/AP

A man walks past the former site of a clinic that offered abortions in El Paso, Texas. Juan Carlos Llorca/AP hide caption

itoggle caption Juan Carlos Llorca/AP

Jennifer Doudna and her colleagues found an enzyme in bacteria that makes editing DNA in animal cells much easier. Cailey Cotner/UC Berkeley hide caption

itoggle caption Cailey Cotner/UC Berkeley

The newly approved Harvoni tablets bring several advances to the fight against hepatitis C, but they also have a steep price tag, reported at $1,125 for a single dose. Gilead Sciences hide caption

itoggle caption Gilead Sciences

Joseph Robert gets a flu shot at the Metropolitan Multi-Service Center in Houston during the Falls and Flu Prevention Day, sponsored by the National Council on Aging and Sanofi Pasteur, on Sept. 26, 2013. Aaron M. Sprecher/AP Images for National Council on Aging and Sanofi Pasteur hide caption

itoggle caption Aaron M. Sprecher/AP Images for National Council on Aging and Sanofi Pasteur

Children's Mercy Hospital in Kansas City, Mo., was the first to report a surge of children with serious respiratory illness in August. Andy Pollard/Children's Mercy Kansas City hide caption

itoggle caption Andy Pollard/Children's Mercy Kansas City