The Shanghai government has banned the use of taxi-booking apps such as Kuaidi Dache during rush hour. Here, a Shanghai resident displays the app on his smartphone in Shanghai, on Jan. 23. Imagine China/Corbis hide caption

itoggle caption Imagine China/Corbis

Some of the 79 people told by the Confederated Tribes of Grande Ronde that they were enrolled in error. Seated on the floor are Russell Wilkinson (left) and Mia Prickett. Seated second row (from left) are Nina Portwood-Shields, Jade Unger, Marilyn Portwood, Eric Bernando, Debi Anderson and Val Alexander. Standing are Antoine Auger (left) and Erin Bernando. Don Ryan/AP hide caption

itoggle caption Don Ryan/AP

Should you fear a chemical inside metal food containers like the ones that hold beans? Government scientists say no. Chip Somodevilla/Getty Images hide caption

itoggle caption Chip Somodevilla/Getty Images