Quoted: Steve Vavrus, a senior scientist in the Nelson Institute Center for Climatic Research at the University of Wisconsin-Madison, says that while more research needs to be done, unusual conditions — including last winter?s ranking as the fourth-warmest in the U.S.; spring turning out to be the warmest since record-keeping began in 1895; and April marking the end of the warmest 12-month period in U.S. history — are harbingers of what?s to come if greenhouse warming persists.
Office of Strategic Communication