According to NASA estimates, each Saharan square metre receives, on average, between 2,000 and 3,000-kilowatt hours of solar energy per year, a farm would be equivalent to 36 billion barrels of oil.
Within just 20 miles of Yosemite Valley, complete with busses of tourists and Starbucks, Evan Quarnstom goes in search of his own slice of the Sierra Nevada mountains.
A PhD Researcher in Climate Change Adaptation discusses how this approach could address the ecological crisis with Guardian columnist and environmental campaigner George Monbiot.
Views of this embattled species range from “all bears are violent and unpredictable” to “OMG, I just want to hug a bear". But is it ethically right to kill a bear, if not for food?
Indian tiger numbers are up, according to one of the most detailed wildlife surveys ever conducted. Tiger populations have risen by 6%, to roughly 3,000 animals.
