The Senate Permanent Subcommittee on Investigations said the tech giant claimed that three key offshore companies were not tax residents of either Ireland or the U.S. One of those subsidiaries paid no taxes for the past five years while it reported income totaling $30 billion.

Twitter captures firsthand accounts and reaction from the massive tornado that swept through central Oklahoma.

A federal judge ruled that prosecutors failed to prove the executive knew about a pending congressional investigation into oil flowing into the Gulf of Mexico in 2010. The decision left in place a second charge against the executive, for allegedly making false statements to investigators about the oil flow rate.

The state straddles Tornado Alley and has had a number of especially strong twisters leave a path of death and destruction in their wake.

Most health plans accept a credit card for the first month's premium and then require customers to pay monthly with a check or an electronic transfer from a bank account. For people without a banking relationship, these transactions can be tricky.

Melissa Block talks to Casey Mongold, owner of Casey's Tire and Auto in Moore, Okla., where a tornado caused widespread destruction on Monday.

Melissa Block talks to Jon Hamilton about the science of tornadoes.

Melissa Block talks to Joe Wertz of the public radio initiative State Impact about the tornado that hit the Oklahoma City area on Monday.

There is one place in the country where a law enforcement agency can trace a gun found at a crime scene back to a buyer: the ATF's National Tracing Center in West Virginia. But the tracing process is usually tedious, involving multiple phone calls and searching, by hand, through paper records.

Boeing's Dreamliner 787 has made its first U.S. flight since being grounded back in January after problems with its batteries. Boeing has redesigned the battery and put it in a fire-proof box. The midday United Airlines flight flew from Houston to Chicago.