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Across the Midwest this summer, scientists are wading into 100 streams to collect water samples and check cages for fish eggs. It's part of a large study to understand how pesticides and agricultural chemicals from farms are affecting the nation's streams.

Grapes that taste like cotton candy? No, it's not a GMO experiment but rather the result of good old-fashioned plant-breeding techniques. One scientist has already brought these sweet treats to the market and hopes our grape choices will one day be as varied as our apple choices.

Marissa Mayer's decision to ban working from home at Yahoo has sparked a debate about the effectiveness of teleworking. NPR's Steve Henn, who works a fragmented schedule from his Silicon Valley home, says research on what works is mixed, but success largely depends on the job and whom you're collaborating with.

A slew of new fairy tale films is on the way to your nearest cineplex, but the intended audience might not be what you'd think. Bob Mondello explains how these movies, like their audiences, are growing up, taking on adult themes and dealing with the fears of a new generation of young adults.

Playwright William Inge, the Independence, Kan. native who went on to win a Pulitzer and an Oscar, would have turned 100 this year. To honor that…

In the summer of 2009, protests of the president's health care agenda boiled over in town hall meetings around the country — marking the rise of the Tea Party movement. Now, groups from all over the political spectrum are hoping to recapture some of that energy.

Growing numbers of Brazilians are visiting the U.S.; last year, they spent $9 billion. It's a sign of a changing Brazil — more affluent, more outward looking. Most of those getting visas to the U.S. are going to shop or do business, and the economic impact has been palpable.

Teams haven't typically tried to develop knuckleballers and players haven't usually wanted to throw the pitch. But now the Baltimore Orioles are teaching the knuckleball to three minor league pitchers. A physics expert and fan of the pitch wonders whether this could be the start of a "knuckleball era."

A new cookbook by Sally Sampson, "Chop Chop: The Kids Guide to Cooking Real Food With Your Family," includes detailed instructions for kids and their parents. Sampson joins us and shares two recipes.

The Justice Department's opposition to the merger of US Airways and American Airlines stunned industry analysts, but many predict the $11 billion deal will eventually win approval. Some industry watchers see the government's lawsuit as a tactic to force American Airlines to surrender routes and slots.