Some biofuels can add to global warming A new study by a Minnesota researcher says when biofuel crops are grown on land that's converted from natural prairie or forest, they'll not only fail to reduce global warming; they could actually make it worse.5:19 p.m.
Minnesotans react to Romney withdrawal Some high-profile Minnesota Republicans are feeling low this afternoon with the news that former Massachusetts Governor Mitt Romney is dropping out the presidential race.5:51 p.m.
Romney Leaves Race, Cements McCain's Lead
Mitt Romney suspended his campaign for president Thursday, bowing to the mathematical logic that says John McCain will be the nominee of the Republican Party. Romney had poured tens of millions of dollars from his personal fortune into an effort that left him hundreds of delegates behind McCain.
Will Conservative Romney Fans Shift to McCain?
Vin Weber, policy chairman for Mitt Romney's presidential campaign, says some conservatives have spoken out strongly against John McCain, but that was easier to do when they had Romney as an alternative.
Explaining Disparities in Democrats' Delegate Tallies
Since Tuesday, different news organizations have been reporting various different tallies of delegates for each candidate, with some putting Barack Obama ahead and others Hillary Clinton. Democratic strategist Tad Devine explains why the disparities are so significant.
Washington Democrats Brace for Record Turnout
Washington state Democrats are holding a presidential preference caucus Saturday that's expected to draw more than twice as many participants as past contests. Interest has skyrocketed as coverage of Super Tuesday dominated the media, and both campaigns find themselves overwhelmed.
Polls Show Voters, Political Parties Divided
The details of the exit polls taken on Super Tuesday reveal an America still very much divided — along lines of race, gender, ideology and generation. And, he says, the political parties have their own divisions to overcome.
After Bhutto's Death, Worries About Voting Safety
Benazir Bhutto's assassination forced the delay of Pakistan's parliamentary elections, now scheduled for Feb. 18. It also brought home the fact that Pakistan has changed — it's now plagued by terrorist attacks. There are fears the attacks will increase as the elections near.
Flow of Iraqis Returning Home from Syria Slows
The U.N. refugee agency says the flow of Iraqi refugees returning from Syria has slowed, and most are returning because they exhausted their savings, not because they believe Iraq is safer. More than 2 million Iraqis have fled since the U.S.-led invasion in 2003. Those who return say they feel very uncertain about the future.
Letters: Election Issues, Georgia Drought, Sit-In
Michele Norris and Robert Siegel read from listeners' e-mails, including responses to our coverage of Super Tuesday, our series on candidates' positions on four major issues, and the drought in Georgia. We also hear a reflection on our interview with a Greensboro student who protested a whites-only lunch counter in 1960.
On Screen and Off, Producer Scott Rudin Adapts
Scott Rudin knows a thing or two about making great films. His name is attached to two of the five movies competing for this year's Best Picture Oscar: He's the executive producer of There Will Be Blood and the producer of No Country for Old Men.
Conservatives a Test for McCain After Romney's Exit
Mitt Romney is suspending his presidential campaign — further cementing John McCain's role as the likely Republican nominee. Romney said if he were to continue his campaign, it would delay the launching of a national effort against the Democrats. But McCain still has a task ahead of him: winning over dubious conservatives.