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Shares of Snap Inc., parent of the popular disappearing-message and camera-centric app Snapchat, rose by more than $8 in the first hours of trading Thursday, as the company watched the $17 price of its initial public offering of 200 million nonvoting shares soar by 50 percent as of mid-day Thursday.

The stock opened above $24 when the new offering began sales shortly after 11 a.m. It then rose above $25 a share, hitting $25.64 by 1:31 p.m.

Ali Brivanlou slides open a glass door at the Rockefeller University in New York to show off his latest experiments probing the mysteries of the human embryo.

"As you can see, all my lab is glass — just to make sure there is nothing that happens in some dark rooms that gives people some weird ideas," says Brivanlou, perhaps only half joking.

Brivanlou knows that some of his research makes some people uncomfortable. That's one reason he has agreed to give me a look at what's going on.

Parent Alert! Your Child Just Skipped Class

Mar 2, 2017

My bank sends me a text alert when my account balance is low. My wireless company sends me a text alert when I'm about to use up my monthly data. Somebody — I guess the National Oceanic and Atmospheric Administration? --sends me a text alert when it's going to rain a whole lot.

A few clever researchers said: "Hey! What if we could send text alerts to parents when students miss class or don't turn in their homework?" And what do you know, it worked.

Updated at 4:20 p.m. ET

White House adviser Kellyanne Conway acted "inadvertently" when she urged shoppers to buy Ivanka Trump's products on Fox and Friends last month and won't make the same mistake again, the Trump administration says.

When James Harris rushed his wife, Salome Karwah, to a hospital at the edge of Monrovia on the night of February 19, he expected that she'd be treated as a priority case. Salome was a prominent Ebola survivor and ex-Doctors Without Borders employee who'd graced the cover of Time magazine in 2014 as one of the "Ebola Fighters" named persons of the year.

Just How Much Pee Is In That Pool?

Mar 1, 2017

You know that sharp odor of chlorine from the swimming pool you can recall from earliest childhood? It turns out it's not just chlorine, but a potent brew of chemicals that form when chlorine meets sweat, body oils, and urine.

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RACHEL MARTIN, HOST:

In his address to Congress last night, the president addressed a whole range of issues, including national security, where he hit some familiar notes.

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