"The world will not forgive leaders gathered in Rwanda this week if they fail to back a proposed agreement to cut greenhouse gases, a top U.N. official said on Thursday, calling the deal an easy one to achieve."

"The exhaustive global study found emissions from oil, gas and coal sites are between 20 and 60 percent higher than many earlier estimates."

"Governments should tax sugary drinks to fight the global epidemics of obesity and diabetes, the World Health Organization said on Tuesday, Oct. 11."

"Nearly 90 years have passed since North Atlantic right whales became a protected species following their devastation by whalers, but their populations have yet to recover. A new report by the National Academies of Sciences, Engineering, and Medicine lays out some of the reasons why."

World environmental leaders gather in Kigali, Rwanda, October 10-14 in an effort to finalize an agreement on limiting hydrofluorocarbons (HFCs), gases used as refrigerants that also boost greenhouse warming.

"Governments from more than 190 countries on Thursday adopted a measure that for the first time will reduce the climate impact of international jet travel."

"PARIS - Invasive insects cause at least $77 billion (69 billion euros) in damage every year, according to a study released Tuesday that says this figure is 'grossly underestimated' because it covers only a fraction of the globe."

"A global agreement to combat climate change will take force after support from European nations sent the accord across an important threshold on Wednesday, prompting U.S. President Barack Obama to hail it as a 'historic day' for protecting the planet."

"The loneliest frog on Earth is dead, taking with him the hope of an entire species."

"Silky sharks, thresher sharks and devil rays all won new protections at a global wildlife summit late on Monday."