As U.N. makes history on Earth Day, Leonardo DiCaprio reminds us not to rest on laurels
April 22, 2016, 2:31 p.m. by Russell McLendon
More than 170 world leaders signed the Paris Agreement on Earth Day 2016, but that's just the beginning.
Rally behind ferrets, narwhals and coyotes in honor of World Wildlife Day
March 2, 2015, 9 a.m. by Catie Leary
The U.N. holiday's 2015 theme promotes getting serious about wildlife crime.
See the climate change poem that made the U.N. cry
September 24, 2014, 10:58 a.m. by Russell McLendon
A young poet from the Marshall Islands reportedly 'brought world leaders to tears' at the U.N. Climate Summit.
Locust swarms wreak havoc on Madagascar's farmlands
June 5, 2014, 9 a.m. by Catie Leary
The island country is experiencing a harrowing infestation of the Malagasy migratory locust, which threatens the livelihoods of the more than 13 million people.
UN report: Climate change already taking a major toll on Earth
March 31, 2014, 3:46 p.m. by Laura Poppick, LiveScience
The new report from the Intergovernmental Panel on Climate Change emphasized how climate-related issues, like water and food shortages, are causing conflicts around the world.
United Nations to take aim at asteroid threat
February 17, 2014, 10:38 a.m. by Leonard David, SPACE.com
An early alert system and rapid space launches are two ways that the UN is coordinating with other agencies to deter asteroids from crashing into Earth.