NEWTOWN, Conn.— The Center for Biological Diversity and Frostpaw, the Center’s polar bear mascot, will be tending a booth at Newtown Earth Day on Saturday, April 23 to hand out endangered species postcards that urge Rep. Rosa DeLauro (D-Conn.) and Sen. Patrick Leahy (D-VT) to increase funding for endangered species and help stem the global extinction crisis.