Even before the advent of agriculture, Homo sapiens kicked off an entirely new process of planetary change. Earth would never be the same. Instead of mere centuries, Erle C Ellis advances a broader view of the Anthropocene, over many millennia, and what that means for land stewardship.
The rise and fall of the ancient Maya has intrigued historians and archaeologists for decades. Now, Earth-system scientists are taking a keen interest. Scott Heckbert asks: what role might environmental conditions and trade play in the growth and eventual collapse of a civilisation?
UN panel foresees big growth in renewable energy, but policies will dictate just how big.
Nature, (12 May 2011, says a report from the Intergovernmental Panel on Climate Change (IPCC), released on 9 May at a briefing in Abu Dhabi, suggests that an inevitable — if slow — shift towards specialized energy crops, sunlight, wind and other sources of renewable power will mark the next four decades.
This issue’s cover story puts 2000 years of regional temperature histories into perspective. Also featured: two full-spread maps visualising the PAGES 2k regional temperature records and ocean acidifi...