A video report on a nationwide law enforcement action targeting Medicare fraud included aerial video that showed the offices of All Ways Home Care in Miami. That business was not implicated in any way in that operation, and we regret the error.
An earlier version of this story said the assertion that Romney's tax cuts would cost $5 trillion came from the left-leaning Center on Budget and Policy Priorities, but the CBPP says it relied on figures reported by the Tax Policy Center.
In an earlier version, the story gave the wrong day for the Oct. 22 presidential debate. It is a Monday, not a Wednesday.
An earlier version of this article incorrectly converted 6 degrees Celsius to 42.8 degrees Fahrenheit. It is in fact around 11 degrees Fahrenheit.
An earlier version of this story stated that Sandberg said Facebook attracts employees who tend to be "millions focused." The correct quote is "mission focused."
An earlier version of this story contained miscalculations that affected the rankings. This error has been corrected.
An earlier version of this story said that this was the coffee chain's first nationwide deal with Groupon. It is the chain's first nationwide deal with LivingSocial.