Congressional members ask "Is the surge in Iraq working?" We'll have a report as more Republican lawmakers break ranks with the White House over the Iraq policy. Our guest is Gordon Lubold of the Christian Science Monitor.

Is Dick Cheney the most influential and powerful Vice President in American history? We will discuss this with historian Julian Zelizer, now professor of history and public affairs at Princeton University.

We talk with Vermont's democratic congressman Peter Welch about a bill he has filed to change the tax structure and force private equity groups and hedge fund firms to pay the corporate tax rate instead of the lower capital gains tax rate they currently enjoy. Welch's says his bill, which comes in the wake of the public offering of stock by the Blackstone groups, is designed to close tax loopholes and level the playing field.

With global warming on everyone's minds, air travelers are now being offered the chance to buy "carbon offsets." Passengers pay about $10 to $20 per flight, and the money goes towards projects like tree planting, solar or wind energy, which reduces the same amount of carbon emissions that the flight caused. Travel expert Kaleel Sakakeeny joins us to talk about the programs and how reliable they are in reducing a traveler's carbon footprint.

Spelling bees are the rage, but a new word game is sweeping the country. We speak to Steve Kleinedler, senior editor of the American Heritage Dictionary and one of minds behind Define-a-Thon, the game in which you are given a definition and you have to guess the word.