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 ...

ANN ARBOR, Mich.—Twenty years after the Earth Summit in Rio de Janeiro, 17 prominent ecologists are calling for renewed international efforts to curb the loss of biological diversity, which is ...

World leaders yesterday kicked off a three-day summit on environment and poverty here to a warning from UN chief Ban Ki-moon that “time is not on our side” for fixing a mounting list of problems. Ban ...

RIO de JANEIRO, Brazil, June 13, 2012 (ENS) – President Dilma Rousseff today opened Rio +20, the UN Conference on Sustainable Development, at Brazil’s giant pavilion in Athletes Park opposite ...

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 ...

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 ...