The city of Fort Bragg, Calif., has ordered restaurants to drastically reduce the amount of dishwashing by serving customers with disposable plates, cups and flatware. Emily Bogle/NPR hide caption

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Students sort grapes at the University of California, Davis research winery. The winery is experimenting with various methods to conserve water. The hope is that commercial wineries will follow suit. Courtesy of Karen L Block/UC Davis hide caption

itoggle caption Courtesy of Karen L Block/UC Davis

The debate about sustainable diets has focused on meat production, which requires lots of land and water to grow grain to feed livestock. It also contributes to methane emissions. But the Cabinet secretaries with final authority say the 2015 dietary guidelines won't include sustainability goals. David McNew/Getty Images hide caption

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India's capital is among the most polluted cities in the world, thanks in large part to the growing number of vehicles on its roads. In its just-announced climate change plan, India does not commit to an absolute reduction of its emissions. Instead, it will slow the release of greenhouse gases. DIBYANGSHU SARKAR/AFP/Getty Images hide caption

itoggle caption DIBYANGSHU SARKAR/AFP/Getty Images

Using an instrument they've named the HOLODEC, for Holographic Detector for Clouds, scientists can now see in fine detail the way air and water droplets mix at a cloud's wispiest edge. iStockphoto hide caption

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