Earth Day 2012: Strategies for a Green Planet

From recycling to energy use, new strategies are needed to ensure a more sustainable future

Trash Reap: 10 Surprising Recycling Efforts--from Bras to Crayons [Slide Show]

This guide, in observance of Earth Day 2012, helps consumers move well beyond the throw-it-out mentality


A Tour of the U.S.'s Clean Energy Future [Slide Show]

The third annual ARPA-E summit showcases potentially transformative energy technologies


A Scientific Argument for Intervening in Nature

The science behind moving species under threat from climate change


Another Inconvenient Truth: The World's Growing Population Poses a Malthusian Dilemma

Solving climate change, the Sixth Great Extinction and population growth... at the same time


Happy Earth Day! Welcome to the Anthropocene

Scientists are suggesting that the present day is part of a new era in the planet's history. David Biello reports


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