This is your first of three free stories this month. Become a free or sustaining member to read unlimited articles, webinars and ebooks. There are 100 days left until the Rio 2012 Earth Summit, one of ...

The leaders of nearly two dozen environmental groups called on President Obama to attend next month's Rio+20 Earth Summit in Rio de Janeiro, underscoring the uncertainty that continues to cloud the ...

RIO DE JANEIRO (Reuters) - All heads of state should attend a major environmental summit in Rio de Janeiro next year to agree concrete ways of putting the world economy on a more sustainable path and ...

Diplomats from over 190 countries agreed on a draft text on green global development on Tuesday to be approved this week at a summit in Rio de Janeiro, but environmentalists said the agreement was too ...

In 1992, nearly every country in the world took part in what was hailed a “historic moment for humanity.” Subscribe to read this story ad-free Get unlimited access to ad-free articles and exclusive ...