NPR News

Zimbabwe says it is putting some of the wild animals in its reserves up for sale because of the severe drought that has hit the country.

That's according to a statement from the Zimbabwe Parks and Wildlife Management Authority (known as ZimParks) that was carried by Reuters and CNN.

Scientists have been able to make and study human embryos in their labs for decades. But they have never been able to keep them alive outside a woman's womb for more than about a week.

That limitation meant scientists were unable to conduct a range of detailed research into early human development.

But now researchers say they have discovered a way to keep human embryos alive in the laboratory about a week longer than ever before, and through a critical period of development.

Donald Trump is the apparent GOP presidential nominee after his two remaining rivals ended their White House bids.

Ohio Gov. John Kasich will suspend his presidential campaign at a 5 p.m. press conference Wednesday in Ohio, campaign sources tell NPR. Texas Sen. Ted Cruz dropped out of the race Tuesday night after a disappointing loss in Indiana.

Impressed, we are. With your #StarWarsDay celebrations, that is. The fourth is strong on the Interwebs.

It's a time for Star Wars-themed treats.

(Even here at NPR.)

And an excuse to show your creative side.

Of course, even this sacred day is not free of the presidential campaign.

Homeland Security Secretary Jeh Johnson says he's "acutely aware" of longer wait times at airports, and now he's boosting staffing at checkpoints, hoping to avoid even longer wait times that had been projected for this summer.

The move comes after officials predicted "long waits in epic lines," as NPR's Marilyn Geewax reported in March.

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