At sign-up events like this one in Los Angeles in 2013, Covered California pledged "affordability" in health insurance as one of its main selling points. Lucy Nicholson/Reuters/Landov hide caption
A nanosecond pulsed laser beam starts the photoacoustic imaging process. Geoff Story/Courtesy of Washington University in St. Louis hide caption
Despite losing his sense of taste and smell to Alzheimer's disease, Greg O'Brien says grilling supper on the back deck with his son on a summer evening is still fun. Sam Broun/Courtesy of Greg O'Brien hide caption
Christy O'Donnell, who has advanced lung cancer, is one of several California patients suing for the right to get a doctor's help with prescription medicine to end their own lives if and when they feel that's necessary. YouTube hide caption
Almond orchards across California are dealing with trees showing signs of stress from the drought, such as smaller nuts and salt-burned leaves. Ezra Romero for NPR hide caption
Author and activist Bill McKibben paddles toward Follensby Pond in New York's Adirondack Mountains, along the route followed by Ralph Waldo Emerson in the summer of 1858. Julia Ferguson/NCPR hide caption
A manatee spotted in the Chesapeake and Delaware (C&D;) Canal on Thursday. It's very unusual for the Florida native to get so far north. Delaware Division of Fish and Wildlife hide caption
"It now pays to get a lot of pleasure out of a little bit of sugar," says Danielle Reed, a scientist at the Monell Chemical Senses Center. Ryan Kellman/NPR hide caption
Living well can mean drinking too much. Juice Images/Corbis hide caption
Fisherman Bill Coppersmith named the rare lobster "Captain Eli" after his grandson. Robert F. Bukaty/AP hide caption
The lab at Dugway Proving Ground in Utah failed to completely kill live samples of anthrax before sending it around the world. Jim Urquhart/AP hide caption
For best quality of life, many cancer patients who can't be cured might do best to forgo chemo and focus instead on pain relief and easing sleep and mood problems, a survey of caregivers suggests. iStockphoto hide caption
Artist's concept compares Earth (left) to the new planet, called Kepler-452b, which is about 60 percent larger in diameter. NASA/JPL-Caltech/T. Pyle hide caption