Occupy D.C. Camp Dismantled Quietly By Park Police

Since the early a.m., U.S. Park Police have been moving into a park near the White House where the Occupy D.C. movement has been encamped for months. Some officers are on horseback and dressed in riot gear, but there haven't been any major clashes so far.

20 Million Years Later, Russians Work To Drill Into Lake

Russian researchers in Antarctica are on the verge of piercing a hole through two miles of ice into an ancient lake, untouched by the light of day for some 20 million years. But it'll be a delicate process to break through without disturbing the pristine waters. Guest host David Green speaks with Antarctic researcher John Priscu about the process.

Activists: Syrian Assault Leaves More Than 250 Dead

In Syria, the death toll is rising after what activists and opposition leaders are calling a massive offensive by pro-government troops in the city of Homs. Activists say at least 250 have been killed in what may be the single most violent day since Syria's anti-government uprising began in March.