World leaders will start trickling into New York on Tuesday for the opening of the United Nations General Assembly, but the big names, including President Donald Trump, won't show up to U.N. Headquarters until next week. 

For the second consecutive year, mass coral bleaching is devastating the Great Barrier Reef, Australia’s lead management agency for the reef confirmed on Friday.

Some of the smallest known frogs were recently discovered following a five-year survey in India.