Sen. Mary Landrieu, D-La., chair of the Senate energy committee, spoke Wednesday about getting congressional approval for the Canada-to-Texas Keystone XL pipeline. With her is Sen. Joe Manchin, D-W.Va., a member of the committee.
J. Scott Applewhite/AP
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These farmers grow maize, onions and other vegetables in a city in Ghana. They use groundwater to irrigate their crops.
Nana Kofi Acquah/IWMI
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Chinese President Xi Jinping and President Obama, seen here during a ceremony at the Great Hall of the People in Beijing, announced pledges to reduce greenhouse gases.
HUANG JINGWEN/Xinhua /Landov
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U.S. President Barack Obama, right, smiles after a group of children waved flags and flowers to cheer him during a welcome ceremony Wednesday with Chinese President Xi Jinping at the Great Hall of the People in Beijing. In a surprise agreement late Tuesday, China agreed to a first-ever target for capping its carbon emissions, while the United States pledge to cut faster than previously planned.
Andy Wong/AP
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Fishermen Ed Stewart (left) and Tannis Goodsen mend groundfishing nets on Merrill Wharf, in Portland, Maine, last November.
Robert F. Bukaty/AP
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Oil, carried here by the Trans-Alaska Pipeline, is fundamental to the state's economy. But Alaskans also face the effects of climate change in their daily lives.
Al Grillo/AP
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An adult spotted lanternfly is seen, its wings spread to show a colorful hind wing. The invasive pest has sparked a quarantine in Pennsylvania.
Holly Raguza/Pennsylvania Department of Agriculture
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Holly Raguza/Pennsylvania Department of Agriculture
Edgar Meadows has been growing Bloody Butcher corn, an heirloom variety, for generations. The name Bloody Butcher refers to the flecks of red mixed onto the white kernels, like a butcher's apron, Meadows says.
Roxy Todd/West Viginia Public Broadcasting
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Roxy Todd/West Viginia Public Broadcasting
Manuel Pulgar-Vidal, Peru's Minister of Environment, U.N. Secretary-General Ban Ki-moon, Intergovernmental Panel on Climate Change (IPCC) Chairman Rajendra Pachauri and Renate Christ, Secretary of the IPCC present the Synthesis Report during a news conference in Copenhagen on Sunday.
Scanpix Denmark/Reuters/Landov
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Mount Etna erupted on March 28, 1983. Lava flows destroyed homes and tourist destinations causing millions of dollars' worth of damage. Teams scrambled to divert the massive flow.
Courtesy of John Lockwood
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Lava near the leading edge of the flow oozes over a concrete slab and toward a tangerine tree before solidifying near the town of Pahoa on the Big Island of Hawaii earlier this week.
U.S. Geological Survey/AP
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Confused about all the different sustainability ratings out there? The simplest option may be to shop at your local farmer's market.
iStockphoto
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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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