The state of Georgia leads the nation in home foreclosures. But a former governor says it didn't have to happen. Also, Nate Silver, professional prognosticator of polls. And a new wave of immigrants in America's small towns are from unlikely parts of the world.

When an American company bought a massive copper mine from the government of Congo, it also took control of part of the impoverished country's economic future. Critics say the contract for the billion-dollar mine left the war-torn African nation with little in return, and that the U.S. government played a part in what many are describing as a modern day land grab. Also, economist Gary Shilling on Wall Street woes.

The Pentagon is making decisions to build up a big, "culturally sensitive" ground force meant to police cities and occupy foreign territory. Why? Pentagon brass thinks that's what's "most likely" down the road. And few in government are asking critical questions.

Why are consumer gas cans exploding? There are millions of them in homes all across the country, but critics charge they can easily explode under the right conditions and that most of the cans could be made safe with an inexpensive filter; also, recruiting US Marines in wartime.

The science behind the storms. A look at how computer modeling has made tracking hurricanes more precise. Has global warming affected hurricane intensity? Painful lessons learned from Katrina. Also, both presidential candidates have ambitious plans to increase public service; a look at the current state of service in America. Also, the GOP convention is being held in an area with the highest rate of volunteerism in the U.S.