Comment |
Featured
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Comment |
The hidden politics of climate engineering
Governments disagree even on the current state of climate change engineering governance, as became clear at the 2019 United Nations Environment Assembly negotiations. They must develop mechanisms to provide policy-relevant knowledge, clarify uncertainties and head off potential distributional impacts.
- Sikina Jinnah
- & Simon Nicholson
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Letter |
Biomass turnover time in terrestrial ecosystems halved by land use
Biomass turnover time is a key parameter in the global carbon cycle. An analysis of global land-use data reveals that biomass turnover is almost twice as fast when the land is used to enhance terrestrial ecosystem services.
- Karl-Heinz Erb
- , Tamara Fetzel
- & Helmut Haberl
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Commentary |
Eruption politics
The impact of a volcanic eruption depends on more than just its size. We need more interdisciplinary research to understand the global societal consequences of past and future volcanic eruptions.
- Clive Oppenheimer
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Article |
Reduction in local ozone levels in urban São Paulo due to a shift from ethanol to gasoline use
Ethanol-based vehicles are thought to generate less pollution than gasoline-based vehicles. An analysis of pollutant concentrations in the subtropical megacity of São Paulo, Brazil, reveals that levels of ozone pollution fell, but levels of nitric oxide and carbon monoxide rose, during periods of prevailing gasoline use relative to ethanol use.
- Alberto Salvo
- & Franz M. Geiger