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A giant and powerful digital camera is about to be shipped from a lab near Chicago to a telescope in Chile to study a mysterious part of the universe called dark energy.

Dark energy makes up most of our universe, but scientists currently know almost nothing about it except that it seems to be making the expansion of our universe speed up.

The Libyan rebels may have stormed into Tripoli on a wave of euphoria Sunday. But they were watchful and deliberate Monday as they realized that Moammar Gadhafi's armed loyalists were still a dangerous presence in many parts of the Libyan capital.

In one contested area, a rebel with a megaphone shouted warnings to his comrades: "Be careful of snipers. The city is not clear yet. Be alert."

But most rebels didn't need to be told. They were already jumpy coming into Tripoli, the grand prize in the rebels' six-month uprising against Gadhafi and his 42 years of rule.

For women seeking an abortion, finding a doctor willing to offer one is easier said than done.

Ninety-seven percent of OB-GYNs have encountered patients wanting an abortion, but only 14 percent of the doctors perform them, according to a study published today in the journal Obstetrics and Gynecology. That finding suggests a smaller percentage of OB-GYNs may be offering abortion services than previous studies have estimated.

NPR's Kelly McEvers is in Syria on a tour organized by a youth group aligned with the government of President Bashar Assad. Most foreign journalists are barred from entering the country otherwise. The tour's theme is "Syria Is Fine." Most of the reporters are from countries that have a history of supporting the Syrian regime — Russia and Iran among them. McEvers is the only American reporter in the group, which also includes some European journalists.

People love how Facebook lets them comment on and share other people's posts. But the idea of sharing on social media has got drug companies scared. When Facebook told drugmakers that they had to start allowing comments on their Facebook pages, some of those pages started disappearing.

Twelve members of Congress have until Thanksgiving to cut roughly $1.5 trillion from the federal deficit. Among the six Democrats and six Republicans on the Joint Select Committee on Deficit Reduction, dubbed the "supercommittee," is longtime Montana Sen. Max Baucus.

The Democrat is one of the longest-serving members of Congress currently in office. He's been in the Senate since 1978, but it wasn't until 2001, when he became chairman of the powerful Senate Finance Committee, that he appeared in the national spotlight.

American fans of the Olympics will have to travel abroad for at least another decade if they want to cheer from the stands at one of the world's biggest sporting events. The U.S. Olympic Committee (USOC) announced today that there will be no American bid to host the 2020 Summer Olympics.

Actually, the news was Tweeted by USOC spokesman Patrick Sandusky. "I can confirm the US will not be bidding for 2020 Olympic Games," Sandusky wrote to his Twitter followers.

As opposition forces have moved into Tripoli, they've gotten into some of the Iraqi military's weapons depots. But they haven't necessarily secured all the military hardware, leaving some of it vulnerable to those who might try to sell it on the black market.

Prosecutors have asked a judge to dismiss some or all the charges against the former head of of the International Monetary Fund Dominique Strauss-Kahn.

Reuters reports the prosecutors made the decision shortly after meeting with his accuser, who had earlier today asked that a Manhattan district attorney be removed from the case.

Gadhafi Loyalists Resist Rebels In Tripoli

Aug 22, 2011

Libya's opposition leadership declared Monday that the decades-old regime of Moammar Gadhafi is finished, but intense fighting raged in parts of Tripoli as loyalists refused to cede control of the capital.

After six months of often brutal fighting, rebels pushed into Tripoli over the weekend in what many Libyans hope marks the end of Gadhafi's 42-year reign.