Farms outside Baghdad as seen from a U.S. Army Blackhawk helicopter. Much of Iraq's soil has a high salt content because of flooding and poor drainage.
Jim Gordon/U.S. Army Corps of Engineers/Flickr
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These scuba divers are among the 2 million tourists who visit the Great Barrier Reef each year. They contribute about $5.6 billion to Australia's economy, according to the Queensland government.
Steve Dorsey for NPR
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The San Luis Reservoir in central California is the largest "off-channel" reservoir in the U.S. It is currently at less than 30 percent of its normal capacity.
Kirk Siegler/NPR
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The restoration's goal is to put as much of the Kissimmee as possible back to the way it was. This photo shows the river after restoration.
Courtesy the South Florida Water Management District
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Courtesy the South Florida Water Management District
Workers drill for oil in the Bakken shale formation outside Watford City, N.D., an area experiencing an oil boom.
Andrew Burton/Getty Images
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Researchers say there's plenty the beef industry can do to use less land and water and emit fewer greenhouse gas emissions. But producers may need to charge a premium to make those changes.
iStockphoto.com
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Corn farmer Jerry McCulley sprays the weedkiller glyphosate across his cornfield in Auburn, Ill., in 2010. An increasing number of weeds have now evolved resistance to the chemical.
Seth Perlman/AP
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Millennials seem to prioritize the environment, but may want to dissociate from the "treehugger" baggage of the term "environmentalist."
Getty Images
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Cindy Minnix waits for a bus in a flooded street on Oct. 18, 2012, in Miami Beach. A changing climate is making floods related to high tides more frequent, scientists say.
Joe Raedle/Getty Images
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Pine nuts aren't farmed; they're harvested from forests. The nuts are hidden inside the cones of certain species of pine, such as this pinyon in Utah's Fishlake National Forest.
Scott Smith/Corbis
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Yoram Bauman jokes about "hyperinflation in hell" and on earth. Case in point: the Zimbabwe hundred-trillion-dollar note.
Lejia Lombardi/Courtesy of Inter-American Development Bank
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Lejia Lombardi/Courtesy of Inter-American Development Bank
Melbourne visitors and residents took to the waters of Australia's St. Kilda Beach in January 2013 to escape a fierce heat wave.
Scott Barbour/Getty Images
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Japan Self-Defense Force (JSDF) soldiers and firefighters conduct rescue operations near the peak of Mount Ontake on Wednesday.
KYODO/Reuters/Landov
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California Gov. Jerry Brown has signed the nation's first statewide ban on single-use plastic bags. Here, mixed plastic items are seen at a recycling plant in Vernon, Calif., earlier this year.
Reed Saxon/AP
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