United Nations Says 80 Countries May Ramp Up Climate Pledges The countries may increase their climate goals, but the United Nations says that to avert extreme warming, an “exponential increase in ambition” is needed. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Trilobites: Many of Florida’s Sea Turtle Nests Were Destroyed by Hurricane IrmaTake a Number: Researchers Predict a Quarter-Million New Cases of Breast Cancer in the U.S.Fearsome Plague Epidemic Strikes MadagascarQ&A: Can Rabbits Escape Roadkill?In Hong Kong, Folk Remedies Are Sickening PatientsWhat’s a Science Reporter to Do When Sound Evidence Isn’t Sound?