The 2013 Pulitzer Prize for National Reporting went to InsideClimate News, a 5-year-old web-only nonprofit, for its book-length feature series on the 2010 Enbridge tar-sands oil spill that fouled miles of Michigan's Kalamazoo River. InsideClimate has been one of the most aggressive media outlets covering the current spill in Mayflower, Arkansas. ExxonMobil recently threatened one of InsideClimate's reporters with arrest for trying to find a federal government press office handling the spill.

"PORTLAND, Maine -- Ocean temperatures have been higher than normal in the Gulf of Maine, creating worries among lobstermen that there could be a repeat of last spring's early harvest that resulted in a market glut, a crash in the prices fishermen get and a blockade of Maine-caught lobsters in Canada."

"NOAA has issued a report on a small part of the recent brutal droughts that have hit the United States over the past few years. The report — 'An Interpretation of the Origins of the 2012 Central Great Plains Drought' — is needlessly confusing, scientifically problematic, and already leading to misleading headlines."

"You might have been wondering whether the Obama administration was going to impose the first-ever greenhouse gas limits on new power plants, since the deadline is April 13."

"WASHINGTON -- Last year's huge drought was a freak of nature that wasn't caused by man-made global warming, a new federal science study finds."

"Under proposed new national science standards, students would learn concepts more thoroughly, including how human activity is driving global warming."

"Ohio State scientist Lonnie Thompson tests the limits of science -- and his health -- to unlock climate secrets frozen at the top of the world's highest mountain ranges."

"The year: 1990. The venue: Palais des Nations, Geneva. The star: Margaret Thatcher, conservative icon in the final month of her prime ministership. The topic: global warming. Thatcher went to the Second World Climate Conference to heap praise on the then-infant Intergovernmental Panel on Climate Change, and to sound, again, the alarm over global warming."

"With the warming U.S. Arctic region poised for greater oil and mining development, the White House needs to develop a national strategy that can take environmental decisions on a larger scale, a report issued Thursday concluded."

"A city administrator looks out at the Gulf of Mexico from this Southeast Texas town, wondering what vicious hurricanes it may spawn. In the Panhandle, a farmer tries new techniques to keep soil from turning to dust. In West Texas, ranchers watch prairie grass die. Others grow algae as water becomes too salty for other crops. And statewide, reservoirs dry up. Want to see what happens when the impacts of climate change are felt? Well, just look at Texas, some scientists say."