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Millions of Americans suffer from migraine headaches so severe they miss work, social gatherings and important family events.

But that doesn't have to be the case, according to Charles Flippen, a University of California, Los Angeles, neurologist and researcher. "Everyone says, 'Oh, well, everyone has headaches,' so they just push through and suffer in silence," says Flippen.

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GUY RAZ, HOST:

It's WEEKENDS on ALL THINGS CONSIDERED from NPR News. I'm Guy Raz.

(SOUNDBITE OF CHEERING)

RAZ: This was the reaction in Cairo's Tahrir Square earlier today after officials announced the results of the presidential election. For the first time in its history, Egyptians have democratically elected their own leader. His name is Mohamed Morsi.

(SOUNDBITE OF CHEERING)

The winner of Egypt's first competitive presidential election is the Muslim Brotherhood's Mohammed Morsi. The official announcement was made Sunday to the cheers and jubilation of a massive crowd in Cairo's Tahrir Square.

Challenges remain, however, as the ruling military council has effectively stripped the incoming president of most of his powers. The popularly elected Parliament, dominated by the Muslim Brotherhood, was also dissolved.

Pyotr Ilyich Tchaikovsky wrote his piece The Year 1812, Festival Overture in E flat major in commemoration of the Russian Army's successful defense of Moscow against Napoleon's advancing troops at the Battle of Borodino. Most Americans, however, know the piece as the bombastic tune that accompanies Fourth of July fireworks shows all over the country.

Next year will mark the 20th anniversary of Siamese Dream, the second album by The Smashing Pumpkins and the one, along with 1995's Melon Collie and the Infinite Sadness, that broke the band into the mainstream and spawned its most lasting hits.

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DAVID GREENE, HOST:

Human evolution is all about survival of the fittest. Over thousands of generations, the weak have been weeded out, and the strong have survived. But how would that kind of natural selection work in other settings - like, say, music? Well, one biologist decided to find out. He designed a website where listeners can rate collections of notes according to their musicality. The nice sounds survive, and other users listen to them. But the ugly sounds die off.

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(SOUNDBITE OF SONG, "LIFE IS A BALL GAME")

SISTER WINONA CARR: (Singing) Life is a ball game being played each day. Life is a ball game being played...

DAVID GREENE, HOST:

If life is a ball game, well, Mike Pesca is our man courtside. We talk sports with him every Sunday. This week, we saw a lot of boiling hot temperatures around the country.

But, Mike, we should probably talk about a different kind of heat, I guess.

MIKE PESCA, BYLINE: Yes, the kind of heat that brings joy - to at least some people in South Florida.