News Explainer |
Featured
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News |
India pushes for tech transfer at Durban climate talks
Environment minister says that sharing intellectual property is vital for tackling global warming.
- T. V. Padma
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Letter |
Increased soil emissions of potent greenhouse gases under increased atmospheric CO2
- Kees Jan van Groenigen
- , Craig W. Osenberg
- & Bruce A. Hungate
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News |
Climate-smart agriculture is needed
Changes in use of nitrogen fertilizer are key to reducing greenhouse gases.
- Natasha Gilbert
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Books & Arts |
Oceans: The blue frontier
A collection of essays highlights the pressing challenges of managing global waters, finds Clive Schofield.
- Clive Schofield
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News & Views |
The prospects for polar bears
Is the polar bear doomed to extinction? Maybe not, according to models of the future extent of Arctic sea ice if greenhouse-gas emissions are curbed. The outlook depends on the ability of policy-makers to act. See Letter p.955
- Andrew E. Derocher
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Letter |
Greenhouse gas mitigation can reduce sea-ice loss and increase polar bear persistence
The dramatic loss of Arctic sea ice with climate change has led to the prediction of a tipping point beyond which ice loss is irreversible and polar bear habitat will be catastrophically lost. By contrast, this study shows a linear relationship between temperature and sea-ice coverage that overcomes the albedo effect that would cause a tipping point. As a result, reducing greenhouse gas emissions can have a positive effect on polar bear populations.
- Steven C. Amstrup
- , Eric T. DeWeaver
- & David A. Bailey
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Editorial |
Citizen scientists
Scientists should speak out on the environmental effects of ventures such as tar-sands mining.
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News |
Measuring the meltdown
With global warming hitting the Tibetan plateau hard, scientists gather to plan an international research campaign to understand and mitigate changes at the 'third pole'.
- Jane Qiu
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Opinion |
Copenhagen Accord pledges are paltry
Current national emissions targets can't limit global warming to 2 °C, calculate Joeri Rogelj, Malte Meinshausen and colleagues — they might even lock the world into exceeding 3 °C warming.
- Joeri Rogelj
- , Julia Nabel
- & Niklas Höhne
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Summer Books |
Two views of our planet's future
David Orr explains how two environmentalists' manifestos bracket the debate on climate change — one favouring technological solutions, the other local interventions.
- David Orr
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News |
Geoengineers get the fear
Researchers fail to come up with clear guidelines for experiments that change the planet's climate.
- Jeff Tollefson
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Editorial |
Climate of fear
The integrity of climate research has taken a very public battering in recent months. Scientists must now emphasize the science, while acknowledging that they are in a street fight.
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Column |
World view: Curing climate backlash
Effective action on climate requires better politics, not better science, explains Daniel Sarewitz.
- Daniel Sarewitz