About 300 dinosaur specimens are on display at the Dinosaur Hall at the Natural History Museum of Los Angeles. Natural History Museum of Los Angeles hide caption

itoggle caption Natural History Museum of Los Angeles

Experts estimate that in a 2 percent growth economy, the average household income would increase $17,000 less over a decade than it would in a world of 3 percent growth. iStockphoto.com hide caption

itoggle caption iStockphoto.com

Specialists Evan Solomon works on the floor of the New York Stock Exchange on Wednesday, when major stock indexes fell steeply. Richard Drew/AP hide caption

itoggle caption Richard Drew/AP

The Federal Reserve on Wednesday will kick off a series of regular press conferences, to be held four times a year. iStockphoto.com hide caption

itoggle caption iStockphoto.com

President Obama outlined a mix of spending cuts and tax hikes to reduce the deficit Wednesday at George Washington University in Washington, D.C. Charles Dharapak/AP hide caption

itoggle caption Charles Dharapak/AP

Advertising boards on buildings are seen without illumination at Tokyo's Shibuya district. Rolling blackouts are crippling a number of industries. Miho Takahashi/AP hide caption

itoggle caption Miho Takahashi/AP