The Democrats are wrapping up their first year in control of Congress without much to show for it. We' speak to Jonathan Weisman of The Washington Post about why that is and whether things will change in 2008.

With Social Security in trouble and so many baby boomers getting ready to retire, why isn't this an issue on the presidential campaign trail? Dean Spiliotes, who runs nhpoliticalcapital.com, joins us to talk about whay this is the case.

We present an excerpt from the documentary, Meltdown: Inside Out in which reporter Daniel Grossman goes to the Andes with Glaciologist Lonny Thompson to observe the glaciers. Thompson has been studying tropical glaciers for three decades.

The Housing Authority of New Orleans plans to demolish the four largest affordable housing complexes in the city to make way for mixed-income complexes. Demolition on one building was interrupted this week by affordable housing advocates protesting the work, but more demolitions are planned this weekend. Gwen Filosa, staff writer for the Times-Picayune, gives us the latest.

Senator George Mitchell released his report yesterday on the use of performance enhancing drugs in Major League Baseball. It describes widespread abuse of both steroids and human growth hormone. We'll talk about the possible fallout with Bill Littlefield, host of Only a Game.

Some Londoners worry that the 2012 Olympic Games will suck the soul out of their community and replace it with a mega-commercial sports park. Here & Now's Karen Given has our report.