The buzz over Barack Obama's vice presidential choice is reaching fever pitch among campaign watchers and pundits, who expect Obama to make an announcement this week — perhaps as early as Wednesday morning.

WASHINGTON, D.C. — Gov. Tim Pawlenty is following a well-established political tradition by taking full advantage of the Republicans' upcoming national convention in St. Paul. A remarkable number of Minnesota political figures have launched their national careers with starring roles at conventions.

By Sharon Schmickle | Monday, Aug. 18, 2008

The Bush administration has tied its entire regional strategy to Pakistan's president, who announced his resignation today.

The easy stuff has already been pumped out; energy insiders now worry about reaching a point where oil production hits its maximum, after which supply goes into permanent decline.

Antiquity's most sophisticated technology tracked ancient Olympics along with celestial events.

By Steve Berg | Friday, Aug. 15, 2008

SEATTLE — In less than a decade, a modern version of the streetcar has emerged as a hot development tool for cities wanting to retrofit their central districts in ways that match the lifestyle and business demands of the 21st century.

By Susan Albright

Thursday, Aug. 14, 2008

America's population will be both older and more diverse by the middle of the 21st century, according to U.S. Census Bureau projections released today. No one group will constitute a majority, as whites do today.

By Doug Stone

Wednesday, Aug. 13, 2008

As Russia denied today that it had invaded another city in Georgia, diplomats and analysts around the world are trying to figure out what the flare-up in the Caucasus portends for democracy and diplomacy.

By Susan Albright

Tuesday, Aug. 12, 2008

Polls show that Internet users care about online privacy. Yet how many of us leap from tab to tab, email to email, site to site without a care, little noticing the strikingly "relevant" ads that follow?  Enough to worry some in Congress.

By Doug Grow | Tuesday, Aug. 12, 2008

The former vice president is one of only 10 men alive today who know the pressures of being the standard-bearer of one of the nation's two major parties. Walter Mondale recalls that when he gave his acceptance speech in 1984, he was confident of his big moment — but anxious, too, knowing from experience that just about anything could go wrong.