Banks and hedge funds have bet billions of dollars on oil in the last decade, but it’s not clear whether they’re driving up the cost of crude.
Changing weather patterns force a farming community to look to new crops.
Helen Clark says that 20 years on from Rio Earth summit, sustainable development is still not mainstream policy.
The fallout from a dubious rhetorical question posted by HuffPo’s science editor.
What do high sea levels have to do with mosquito outbreaks?