Some environmental justice advocates say California's cap-and-trade program hasn't done anything to clean up the air in low-income communities like Wilmington, where refineries are located near residential neighborhoods. Maya Sugarman/KPCC hide caption

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Maya Sugarman/KPCC

Driscoll's, the largest berry producer in the world, now grows about the same quantity of raspberries and strawberries in Mexico as it does in California. Many American producers have recently expanded their production to Mexico. Mike Mozart/Flickr hide caption

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Mike Mozart/Flickr

Why Ditching NAFTA Could Hurt America's Farmers More Than Mexico's

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The Oroville Dam's main spillway as seen on Feb. 14. Crews working round the clock since Sunday have made progress stabilizing this and another spillway damaged by water. Marcio Jose Sanchez/AP hide caption

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Marcio Jose Sanchez/AP

Coeur d'Alene is the largest city and county seat of Kootenai County, Idaho. North Idaho counties like Kootenai have seen their population double since the 1990s. Karen Ybanez/Flickr hide caption

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Karen Ybanez/Flickr

Leaving Urban Areas For The Political Homogeneity Of Rural Towns

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An aerial photo released Saturday by the California Department of Water Resources shows the damaged spillway with eroded hillside in Oroville, Calif. William Croyle/California Department of Water Resources via AP hide caption

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William Croyle/California Department of Water Resources via AP

Signs Of Hope At Oroville Dam, After Overflow Sparked Large Evacuation Sunday

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If passed by voters, the "California Nationhood. Initiative Constitutional Amendment and Statute" would remove state constitutional language making California part of the U.S. and require the governor to request admission to the United Nations. George Rose/Getty Images hide caption

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George Rose/Getty Images

Tom Coleman, who manages more than 8,000 acres of pistachio trees across California, is worried that warmer temperatures will affect his crops. Ezra David Romero/Valley Public Radio hide caption

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Ezra David Romero/Valley Public Radio

Vineyards remain flooded in the Russian River Valley in Forestville, Calif., on Monday. A massive storm system stretching from California into Nevada saw rivers overflowing their banks, flooded vineyards and forced people to evacuate their homes after warnings that hillsides previously parched by wildfires could give way to mudslides. Eric Risberg/AP hide caption

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Eric Risberg/AP

Former Attorney General Eric Holder testifies on Capitol Hill in Washington in June 2012. Holder, now in private practice, has signed on to represent the California Legislature as outside legal counsel. J. Scott Applewhite/AP hide caption

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J. Scott Applewhite/AP