• Using the Planet


    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.
  • Lessons from a simulated civilisation


    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?

Published: October 10, 2012

Global Change Magazine No. 79

This issue highlights various aspects of Arctic climate change, including sea ice and methane. We also look at a new tool for analysing complex global challenges, the path ahead for the Earth-system science community and the aftermath of Rio+20.

The following feature articles from this issue


can be read on-line.

Methane: Not a damp squib, not yet a time bomb
Although Arctic methane sources deserve careful monitoring, there is no reason to panic just yet.

A silver lining to Arctic clouds?
Marine microbiota are the key to a negative feedback that could slow down the melting of Arctic sea ice.

Mapping a planet under pressure
DebateGraph moves away from linear narratives and provides a new way of analysing complex global challenges.

A Rio retrospective
A realistic assessment of Rio+20 points to some limited but significant successes, not least for IGBP.

Earth-system science at a crossroads  
The path ahead should combine the need for wider engagement with a continuing commitment to reason.

Zooming in over the northern latitudes  
The European Space Agency is working with global-change researchers to better understand Eurasian boreal regions.

Here you can download articles to read them as Pdfs

Entire magazine PDF (pdf, 3.5 MB)

Cover and contents PDF (pdf, 1.1 MB)

Editorial PDF (pdf, 380.9 kB)

NewsPDF (pdf, 531.1 kB)

Methane: Not a damp squib, not yet a time bombPDF (pdf, 868.5 kB)
Although Arctic methane sources deserve careful monitoring, there is no reason to panic just yet.

A silver lining to Arctic clouds?PDF (pdf, 683.4 kB)
Marine microbiota are the key to a negative feedback that could slow down the melting of Arctic sea ice.

Mapping a planet under pressure PDF (pdf, 867.5 kB)
DebateGraph moves away from linear narratives and provides a new way of analysing complex global challenges.

A Rio retrospectivePDF (pdf, 534.9 kB)
A realistic assessment of Rio+20 points to some limited but significant successes, not least for IGBP.

Earth-system science at a crossroads  PDF (pdf, 1.2 MB)
The path ahead should combine the need for wider engagement with a continuing commitment to reason.

Zooming in over the northern latitudes  PDF (pdf, 552.9 kB)
The European Space Agency is working with global-change researchers to better understand Eurasian boreal regions.

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