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ELISE HU, HOST:

I have covered many wars during my years at NPR, but never did I encounter such a monstrous man as Ratko Mladic, the Bosnian Serb army commander likely to spend the rest of his life in prison.

I first heard his name when I was staying in Sarajevo in June 1992. It was a time of constant and brutal shelling carried out on the explicit orders of Mladic, who was intent on terrorizing and dividing the city and killing or expelling all non-Serbs.

Emmerson Mnangagwa, the former vice president of Zimbabwe who is poised to take the helm of the country, was met with cheers in the capital city Harare when he returned to the country on Wednesday.

Mnangagwa fled the country earlier this month, citing fears for his life after Zimbabwe's authoritarian president Robert Mugabe fired him. That firing helped trigger a massive political upheaval.

Now Mugabe — the only leader Zimbabwe has ever known — has resigned under immense pressure, and Mnangagwa is set to be sworn in as president on Friday.

The ever-widening use of artificial lights is making the nighttime Earth glow increasingly brighter, with the amount of global light growing about 2 percent each year.

That worries advocates for the protection of dark skies, who say that artificial night glow can affect wildlife like migrating birds and keeps people from connecting to the stars. What's more, they say, all that wasted light sent out into space is effectively wasted money.

Updated at 10:20 a.m. ET

Lebanese Prime Minister Saad Hariri will be remaining in power, at least for now — despite the strange address he gave more than two weeks ago, while he was in Saudi Arabia, stating that he planned to resign.

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