Physical exercise, diet and supportive counseling are the first steps of any weight-loss program. But sometimes that's not enough to take large amounts of weight off, and keep it off, doctors say. 13/Ocean/Corbis hide caption
Juvenile Chinook salmon swim in the American River in California. The state's salmon fishery, which revolves around fall-run Chinook, has been estimated to be worth $1.4 billion, with the fish finding their way into markets and restaurants. Courtesy of John Hannon/USBR hide caption
The region where two mining dams failed in southeastern Brazil is seen in this satellite image. According to Yahoo, one of the dams that failed is at bottom right. Google Maps hide caption
"I know for myself, I have a very colorful personality, rich ideas, and just a lot going on in my mind. But there's a gap between where that stands, and how I communicate it with the rest of the world." — Alix Generous Marla Aufmuth/TED hide caption
"How is it that we spend more time taking care of our teeth than we do our minds?" — Guy Winch Courtesy of Julia Gliebova Photography hide caption
Human stem cells, in this case made from adult skin cells, can give rise to any sort of human cell. Some scientists would like to insert such cells into nonhuman, animal embryos, in hopes of one day growing human organs for transplantation. Science Source hide caption
Flares and electric lights on oil well pads illuminate low-hanging clouds near Watford City, North Dakota. Andrew Cullen hide caption
Solar storms from the sun send charged particles streaming towards Mars. Research now shows those particles are stripping away the atmosphere. NASA/GSFC hide caption
You'd be looking blue, too, if you realized you'd made big errors in your research. Christopher Thorstenson/Open Science Framework hide caption
Women can get a free pregnancy test and a free ultrasound at the clinic, as well as counseling regarding three options — parenting, adoption and abortion. The clinic will not refer clients for abortions. Becky Sullivan/NPR hide caption
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