The United Nations (UN) is an intergovernmental organization consisting of 192 member states that was formed in 1945 after WWII to promote international peace, security and cooperation. Decision-making is conducted through various administrative bodies, the most notable being the General Assembly and the Security Council. The UN Environment Programme (UNEP), a branch of the United Nations that seeks to address environmental issues at both the regional and global level, focuses on a wide range of activities regarding terrestrial, marine and atmospheric ecosystems. (Source: UNEP, UN, WordNet / Photo: Flickr)

U.N. supports World Environment Day with new anthem

11 cultural traditions protected by UNESCO

Is time running out for the 'leap second'?

As U.N. makes history on Earth Day, Leonardo DiCaprio reminds us not to rest on laurels

4 things to know about the Paris climate deal

Why the Paris climate talks might actually work

Rally behind ferrets, narwhals and coyotes in honor of World Wildlife Day

How storytelling can inspire positive change

What is Climate-Smart Agriculture?

See the climate change poem that made the U.N. cry

Locust swarms wreak havoc on Madagascar's farmlands

Journalist gets up close and personal with a seal