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Los Angeles chef Roy Choi helped launch the food truck movement. Now he wants to blend high and low cuisine to combat food deserts. He's challenging the tyranny of junk food in the inner cities, and is pushing other chefs to think about how they can contribute to food justice in their communities.

Two years ago Pakistan's Punjab province was hit with one of the world's worst dengue outbreaks. This year the number of recorded cases has plummeted. Many leaders credit a mobile phone app that tracks mosquito populations and city workers' efforts to contain them.

Farmers say they need to produce food as efficiently as possible in order to feed the world. It's high-tech agriculture's claim to the moral high ground in the debate over how best to grow food. But is it true?

Baseball's All-Star game is being played in New York Tuesday night. The winner gets home field advantage during the World Series.

British tennis player Andy Murray won Wimbledon in straight sets on Sunday. It's the first time in 77 years that the U.K. has had one of its own players win the grass court grand slam. David Greene talks to journalist Simon Cambers, who covered Wimbledon for The Guardian newspaper.

By some estimates, half of the U.S. government's intelligence spending goes to private contractors such as Booz Allen Hamilton. Edward Snowden, the National Security Agency leaker, says he took a job at Booz Allen because he saw it as the best place to gather the intelligence secrets he wanted to expose. Some members of Congress say the episode underscores the need for greater oversight of intelligence contractors and they are calling for hearings into the matter.

At a "quinoa summit" this week, farmers from around the world are trading tips on how to turn this ancient Andean grain into a large-scale crop. Some Andean farmers who currently grow quinoa are asking, "What happens to us?"

Renee Montagne talks to David Wessel of The Wall Street Journal about the jockeying over who will be the next chairman of the Federal Reserve.

The Americans put on a show at the Gold Cup tournament, outscoring opponents 20 goals to 4 and stretching the team's win streak to 11 games. Even if that doesn't exactly send a chill through the rest of the world soccer community, it's enough to gives U.S. fans real hope for the 2014 World Cup in Brazil.

Sen. Max Baucus and Rep. Dave Camp skip much of Washington's formality when they're out traveling the country to try to drum up support for simplifying the tax code. They want to convince Americans — and their colleagues in Congress — that it's possible, and worth it.