In this undated picture, Mount Everest, the world's tallest mountain at 29,029 feet, stands behind the Khumbu Glacier, one of the longest glaciers in the world. Nepal has more than 2,300 glacial lakes, and experts say at least 20 are in danger of bursting.
The Himalayas are sometimes called the world's "third pole" because they are covered with thousands of glaciers. Water from those glaciers helps feed some of the world's most important rivers, including the Ganges and the Indus. And as those glaciers melt, they will contribute to rising sea levels.
So a lot is at stake in understanding these glaciers and how they will respond in a warming world. Researchers writing in the latest issue of Science magazine make it clear they are still struggling at that task.
Republican presidential candidate Mitt Romney, joined by Sen. Marco Rubio, R-Fla., talks to reporters during a news conference in Aston, Pa., on Monday. Rubio is frequently mentioned as a potential running mate for Romney.
Ahead of Pennsylvania's primary Tuesday, the likely Republican presidential nominee has been campaigning in the state with a man at the center of running-mate speculation — Florida Sen. Marco Rubio. But Mitt Romney hasn't said much about whom he might name as his vice presidential choice.
Romney has said he appointed a longtime aide to handle the process and that he hasn't yet discussed making a list of potential candidates. But just about everyone else in politics is discussing it. And the men at the top of that list are asked about it a lot.
Natasha Shamone-Gilmore (right) attends church with her husband, Curtis Gilmore (center), and her father, Franklin Brunson, 81. Shamone-Gilmore moved Brunson into her Capitol Heights, Md., home after he developed dementia.
For a certain set of readers, one need only say the word "pigeon" to set off a frenzied outburst of delight. Pigeon is the star of a series of best-selling children's books, including The Pigeon Finds a Hotdog! and Don't Let the Pigeon Drive the Bus! He's not much more than a stick figure with two circles for eyes, but he can still get huffy and display all the melodrama of a 4-year-old.
Particles: Nuclear Power After Fukushima Airs Monday, April 23 at 8:00 p.m. A one-year anniversary special examining the future of nuclear power after the disaster at the Fukushima Daiichi plant in Japan. Among many stories, Alex Chadwick conducts an interview with a deputy director of the Nuclear Regulatory Commission about behind-the-scenes goings-on during the early hours and days post-Fukushima — and next steps for nuclear plants in the United States.
The retrial of baseball great Roger Clemens began in earnest Monday after a week of jury selection. Clemens is charged with lying in 2008 to a congressional committee when he denied ever using steroids or human growth hormone.
He will be judged by a jury of 10 women and 6 men — 12 jurors and 4 alternates — who will decide whether Clemens lied under oath about using the drugs when he testified before a congressional committee investigating the use of performance-enhancing drugs in baseball.
In this courtroom sketch, singer and actress Jennifer Hudson testifies on Monday in Chicago at the murder trial of William Balfour.
Credit Tom Gianni / AP
The Oscar-and Grammy Award-winning artist Jennifer Hudson took the stand today during the trial of the man accused of killing her mother, brother and seven-year-old nephew.
Reporting from Chicago, NPR's Cheryl Corley filed this report for our Newscast unit:
"Hudson began crying when a prosecutor asked her about the last time she saw her family. She answered it was the Sunday before their slaying in October of 2008. The man accused of killing them, William Balfour, was Hudson's brother-in-law at the time.
American Airlines and American Eagle employees protest Monday in New York City against American's plans to cut jobs and labor costs while under bankruptcy court protection. American is seeking permission to break up union contracts and cut expenses, but the unions oppose those plans and support a potential takeover bid by US Airways.
With US Airways breathing down its neck, making nice with its unions as well as its creditors, American Airlines came to New York City on Monday to ask a federal bankruptcy judge for relief. Mostly, American wants relief from its unions — 13,000 jobs would be eliminated under its reorganization proposal. American has been hemorrhaging money for years and wants to lower its costs to compete.