The Cienaga, declared a biosphere reserve in 2000 and a protected wetland site under the international Ramsar convention in 2001, has a diversity of ecosystems, including swamps, rivers, lagoons, grasslands, mangroves, semi-deciduous, evergreen and sub-co

Researchers have found a reliable marker of colony collapse disorder, a mysterious malady that in 2007-2008 killed off more than a third of commercial honey bees in the United States.

Global warming is threatening polar bears as it melts their icy Arctic habitat, Norway's environment minister said .