Astronomers have detected possible signs of gases released by volcanic activity.
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Solar radiation management might be able to reduce some of the risks of global warming while countries get their emissions under control.
The merchant navy – some 20,000 ships – carries the vast majority of trade goods around the world. Unfortunately, they also spew toxic pollutants that harm people and the environment.
Geoengineering could help regions affected by climate change deal with the problem.
So serious are the effects of air pollution on human health - the WHO recently categorised it as carcinogenic, responsible for 223,000 deaths a year worldwide - that it is easy to neglect its wider impact…
It may seem odd for the European Commission to declare 2013 the “Year of the Air” in order to focus on improving air quality standards. Most would feel air pollution is a problem that has been more or…
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Professor, Climate Change Cluster, University of Technology Sydney
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Fellow, University of Bristol
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Associate Dean, Chair Professor of the Atmospheric Environment, City University of Hong Kong
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Professor, Addis Ababa University
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Group Leader, Nitrogen and Integrated Assessment, UK Centre for Ecology & Hydrology
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Visiting Adjunct Professor, School of Governance, University of the Witwatersrand
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PhD Student, The Open University