Sonari Glinton

The trading pits at the Chicago Board of Trade and the Mercantile Exchange have long been potent symbols of American capitalism. And they used to be as rough and tumble as the city itself, where burly men bought and sold commodities like hogs, cattle, corn and soybeans.

Trading volume has gone up considerably in recent years, but Chicago's trading pits are tamer places today — the result of a revolution futures trading has undergone over the past quarter century. Much of the trading has left the pits and gone electronic.

Starting a new car company from scratch isn't tried often in the United States. The last time one was truly successful was about 100 years ago. And Tesla Motors, a startup from Silicon Valley, faces some unusual hurdles.

Still, despite the challenges Tesla faces, the electric car company and its CEO, Elon Musk, have gotten further than most automotive entrepreneurs.

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From NPR News, this is ALL THINGS CONSIDERED. I'm Audie Cornish.

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I'm Melissa Block. And we begin this hour with day two of the Chicago teachers' strike. Some 350,000 students are affected by the walkout in the nation's third-largest school district. We'll have a report on how the strike is playing out in the presidential race.

CORNISH: But, first, NPR's Sonari Glinton reports on how parents, churches and local charities are scrambling to figure out what to do with so many kids with nowhere to go.

Delegates, journalists and protesters are beginning to fill the streets of Charlotte, N.C. The city has a lot riding on the Democratic National Convention, which gets under way Tuesday.

Hundreds of protesters paraded around the downtown area of Charlotte — which residents call Uptown — gathering in front of Bank of America headquarters.

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And our last word in business today is Happy Birthday.

Turns out when you're a billionaire investor you can celebrate any way you want. Warren Buffett turned 82 yesterday and his wish was to give away billions, so he did, in the form of millions of dollars worth of his company stock. All told, those shares will eventually be worth about $3 billion. That gift was divided between his three children's charitable foundations.

NPR's Sonari Glinton has more.

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The airline industry is having a better than expected summer. Airline stocks have been on the rise and customer service is improving. These days, airlines are less likely to lose your luggage. They're also seeing the highest percent of on-time arrivals since the government started keeping track in the late 1980s.

NPR's Sonari Glinton reports the industry is getting some help from an unlikely source.

Hundreds gathered in Flint, Mich., Tuesday, to celebrate the return home of Olympian Claressa Shields. At 17, Shields became the first U.S. woman ever — and the only American this summer — to win a gold medal in boxing.

In a rare moment of joy, Flint greeted the high school student with a marching band and a motorcycle escort.

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This is WEEKEND EDITION from NPR News. I'm Scott Simon. Eight-point-two percent, that's the number economists and politicians are looking at closely. It is the unemployment rate for the month of June. The U.S. Labor Department reported that the economy added only 80,000 jobs last month. As the economy continues its very slow recovery, it's worth asking, is the jobs report always the best indicator? NPR's Sonari Glinton has more.