It would take more than 9.5 million square miles of trees to offset the emissions of the world’s 200 largest fossil fuel ...

Planting trees can help save the planet, right? A new study finds that to offset all the planet-warming carbon emissions from ...

The never-before-seen "nova," dubbed V462 Lupi, recently appeared in the constellation Lupus, after suddenly becoming 4 ...

New study confirms ancient human footprints in America date back 21,000 years, reshaping the history of early human presence.

PetroChina International, the trading arm of the Chinese oil major , says it is interested in North American liquefied ...