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California Gov. Jerry Brown has signed off on one of the strictest school vaccination laws in the country a day after the state Legislature gave the measure final approval.

It's not as if two worlds will collide tonight — Venus and Jupiter are only converging into a small area of the Earth's sky. NASA says the two bright planets will be "a jaw-dropping one-third of a degree apart."

Over at Vox, a white woman who until recently was a tour guide at a historic Southern plantation recounts some . . . interesting questions she got from the mostly white tourists she encountered over the years, some of whom had jaw-dropping ideas of what slavery was really like.

The Iran nuclear talks, which had been scheduled to wrap up Tuesday, have been extended. The U.S. and the five other nations negotiating with Tehran over its nuclear program announced they'll meet for another week, as it became clear that they weren't likely to reach a deal by today's deadline.

Pope Francis will meet the homeless, immigrants and prisoners as well as President Obama, and become the first pope to address Congress when he visits the U.S. in September, the Vatican announced Tuesday.

The Sept. 19-28 visit will take Francis to Cuba and the U.S., where he will visit Washington, New York and Philadelphia.

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