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Emerging science shows that people respond more favorably to warnings about climate change when it's portrayed as a health issue rather than as an environmental problem. Should the symbol for danger be a child instead of a polar bear?

Birds are drawn to the blue berries of the tropical Pollia condensata plant; scientists are just as intrigued with the small shiny fruits. A recent study shows that the berries are more intensely reflective than any other living thing.

To try to get a sense of what it really means to be the president, writer Michael Lewis spent six months in President Obama's shadow. Lewis wanted to show just what it's like to be in the president's shoes — down to something as simple as what he eats and wears every day.

Throughout the government's transitional period, the Egyptian pound remained stable because the government shored it up through foreign reserves. As those reserves reach dangerously low levels, concern is mounting that a major currency devaluation is imminent.

When a runner originally from Sudan ran the Sioux Falls Marathon and shattered the world record by 25 minutes, he was as shocked as everyone else. Turns out, he ran the wrong route.

President Obama will mark the 11th anniversary of the Sept. 11, 2001, attacks with a moment of silence on the South Lawn of the White House.

It's been 11 years since the September 11th terrorist attacks, and that date still resonates with millions of Americans. But host Michel Martin looks at whether annual commemorations of tragic events help or hurt. She speaks with psychiatrist Dr. Carl Bell and Civil War historian Kevin Levin, who lost a cousin in the 9/11 attacks.

A member of Anonymous said he was responsible for the attack. Not so, says GoDaddy.

The 11th anniversary of the attacks is being observed with a moment of silence and speeches by President Obama at the Pentagon and by Vice President Joe Biden at Shanksville.

More sea ice in the Arctic Ocean melted in the summer of 2012 than at any time since scientists began tracking the phenomenon. NPR science correspondent Richard Harris discusses how the historic loss of ice cover could affect weather conditions around the world.