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While carbon dioxide streams into the atmosphere from tailpipes and smokestacks around the world, one man is building a machine to suck it back out. And some heavy-hitting investors are betting that it's going to work.

Blacks and whites in America both widely approve of interracial marriage, according to a recent Gallup Poll. And in practice, all racial and ethnic groups are marrying each other more than ever. Still, it hasn't been that long since most Americans strongly opposed such marriages.

The Saudis are demanding that Yemen's president step aside after months of protest against his rule. Yet last month, the Saudis didn't stop Ali Abduallah Saleh from leaving Saudi Arabia, where he received extensive medical treatment, and returning to Yemen.

Imagine the U.S. government saying to the people living around Yellowstone, "You know what? All those wild animals in the park — the grizzlies, the bison, the wolves — they belong to you." This is exactly what the government of Namibia has done in a radical experiment to save wildlife — and the people who share their land.

Huntsville is the shining star in Alabama's economy. Scientists there designed the rockets that put man on the moon. In the past 50 years, it's become a magnet for high-tech space and defense jobs. But with NASA downsizing and the specter of defense cuts looming, Huntsville finds itself in limbo.

Braugher was known for his strong dramatic presence before he shifted gears and worked in comedy.

Cement plants, like Ash Grove in Chanute, Kan., burn hazardous waste for fuel, causing anxiety for nearby residents despite assurances of regulators.

Energy Secretary Steven Chu will face scrutiny on Capitol Hill Thursday over loans to the failed solar firm. But the government has a long history of subsidizing many kinds of energy, from coal to oil to wind. Still, different sectors disagree on whether tax deductions should be considered a subsidy.

Imagine the U.S. government saying to the people living around Yellowstone, "You know what? All those wild animals in the park — the grizzlies, the bison, the wolves — they belong to you." This is exactly what the government of Namibia has done in a radical experiment to save wildlife — and the people who share their land.

There is in the American air — some 13 months away from the 2012 election — a whiff of suggestion that Obama might not be re-elected. Or re-electable. Past presidents have weathered stormier times, but when you hit bottom matters.