A view of a road closure to the Vattnajokull glacier, the site of the Bardarbunga volcano under the Dyngjujokull ice cap in Iceland, on Sunday. Scientists had worried that the volcano might spew steam and ash, but say now that it appears to have quieted. Vilhelm Gunnarsson/ Fretabladid/EPA/Landov hide caption

itoggle caption Vilhelm Gunnarsson/ Fretabladid/EPA/Landov

A young Chinook salmon, called a smolt, near Vallejo, Calif., on April 24, 2014. North Coast tribes and environmentalists fear that the smolts and Chinooks may not survive this year's low river flows and warm water. Rich Pedroncelli/AP hide caption

itoggle caption Rich Pedroncelli/AP

Giant Cabbage Weigh-Off 2013 winners (with placards, left to right): Scott Rob (92.1 pounds), Keevan Dinkel (92.3 pounds) and Brian Shunskis (77.4 pounds). The growers are joined by the cabbage fairies, a group of women who for 15 years have volunteered at the cabbage competition. Clark James Mishler/Courtesy of Alaska State Fair hide caption

itoggle caption Clark James Mishler/Courtesy of Alaska State Fair

Maria Benech of the U.S. Forest Service surveys a severely burned patch of forest. Almost 40 percent of the burned area looks similar. Lauren Sommer/KQED hide caption

itoggle caption Lauren Sommer/KQED

Louis E. Pratt, master ivory cutter for Pratt, Read & Co., shows off eight ivory tusks, April 1, 1955. Courtesy of Deep River Historical Society hide caption

itoggle caption Courtesy of Deep River Historical Society

Asian carp, battered and fried. As the fish makes its unwelcome way up the Mississippi River, chefs are trying to get people to eat to beat it back. Louisiana Sea Grant/Flickr hide caption

itoggle caption Louisiana Sea Grant/Flickr

Farmer Seth Watkins (left) and agronomist Matt Liebman stand amid native prairie grasses near Des Moines, Iowa. The conservation strip is used to stop soil erosion. John Ydstie/NPR hide caption

itoggle caption John Ydstie/NPR