Daily Roundup: February 9, 2010

Prius Problems: Toyota admits that it may have known of the Prius's brake problems as early as Oct. 2009, but the company decided the model was operating correctly. The car maker has since recalled 437,000 hybrids. Detroit Free Press

First Lady of Food: Michelle Obama kicked off "Let's Move," a campaign to fight childhood obesity and advocate for more effective food labeling, better grocery stores, healthier school lunches, and getting kids outdoors. USA Today

New Smoking Danger: New studies find more evidence of the dangers of "third-hand smoke," suggesting that nicotine residue on household surfaces may react with chemical cleaners to create cancer-causing toxins. BusinessWeek

Pollution Report Redux: New research suggests that water pollution in China in 2007 was actually twice the level reported by the government, possibly because the original survey failed to include agricultural waste. Reuters

No Fish, No Foul: The federal government will allocate $78.5 million toward an initiative to keep non-native Asian carp out of Great Lakes waterways. Michigan Governor Jennifer Granholm said the allocation is not enough to effectively fight the invasive species. New York Times

--Jessi Phillips