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A suicide bombing in Yemen has killed at least 54 people in the southern city of Aden, The Associated Press reports, citing Yemen's health ministry.

Earlier the medical charity Doctors Without Borders, also known as MSF, posted on Twitter that one of their hospitals had received 45 wounded and was treating another 60-some wounded.

The attack has been claimed by the Islamic State, NPR's Alison Meuse reports, and an ISIS-affiliated news outlet says the bombing targeted an army recruitment center.

The rumbling started on the afternoon of May 22, 1960. Sergio Barrientos, then about 8 years old, was walking down a street in his hometown in southern Chile when the ground started to shake. He remembers electrical wires swinging from the telephone poles — so violently that they slapped each other from opposite sides of the street.

"At the same time, I saw some of the chimneys falling down through the roofs of the houses," says Barrientos.

We're not going to bury the lede here: Bob Ross' hair was actually straight. Just ask his longtime business partner, Annette Kowalski, who knew Ross better than anyone — he had just gotten out of the Air Force, and was unsuccessfully trying to make a living as a painter, she says.

"He got this bright idea that he could save money on haircuts. So he let his hair grow, he got a perm, and decided he would never need a haircut again," Kowalski explains.

You've likely heard that dark chocolate is good for you.

Last year, researchers linked a regular chocolate habit to a reduced risk of heart disease.

And, as we've reported, compounds found in cocoa known as flavanols or polyphenols have been shown to improve vascular health by increasing blood flow.

Immigration has been a galvanizing issue in Donald Trump's campaign from the beginning.

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