| Gas fracking: can we safely squeeze the rocks? | Environmental development |  | | 2013 | 9,289 | 5,393 |
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| The end to cheap oil: a threat to food security and an incentive to reduce fossil fuels in agriculture | Environmental development | | | 2012 | 720 | 1,246 |
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| 21 issues for the 21st Century: results of the UNEP Foresight Process on Emerging Environmental issues | | | | 2012 | 734 | 1,904 |
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| The Decommissioning of Nuclear Reactors and Related Environmental Consequences | UNEP Global Environmental Alert Service (GEAS) | | | 2011 | 705 | 749 |
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