The biggest polluters in the world are known to be the United States of America and China. In 2007, China overtook the United States for the dubious role of world's greatest carbon emitter.

A new study says the world’s major river systems contain more than enough water to meet global food production needs in the 21st century.

The way in which global warming causes many of the world's organisms to shrink has been revealed by new research from Queen Mary, University of London.

In many cities air pollution is reaching levels that threaten people's health according to an unprecedented compilation of air quality data released today by WHO (World Health Organization).

Global carbon dioxide (CO2) emissions reached an all-time high in 2010, rising 45% in the past 20 years.

Global emissions of carbon dioxide (CO2) increased by 45 % between 1990 and 2010, and reached an all-time high of 33 billion tons in 2010.

As a child, Adeline Smith, an elder in the Lower Elwha Klallam Tribe who grew up along the Elwha River, saw how a hulking concrete dam choked off one of the most prolific salmon runs on earth.

Converting West African rainforests into cropland reduces rainforest in adjacent forest areas, reports research published in Geophysical Research Letters.

The New England cottontail rabbit, in sharp decline for decades throughout the Northeast, is on the verge of disappearing from several states, with the reason somewhat a mystery, wildlife experts s

More Americans than last year believe the world is warming and the change is likely influenced by the Republican presidential debates, a Reuters/Ipsos poll said on Thursday.

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