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Fast action on black carbon, ozone and methane could help limit global temperature rise to 2 degrees C

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The climate change benefit is estimated for a given year (2050) and human health and crop benefits are. Fast action on pollutants such as black carbon, ground-level ozone and methane may help limit near term global temperature rise and significantly increase the chances of keeping temperature rise below 2 °C (3.6 °F)—and

Ozone 218
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Study finds rising temperatures increase risk of unhealthy ozone levels absent sharp cuts in precursors

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Ozone pollution across the continental United States will become far more difficult to keep in check as temperatures rise, according to new work led by the National Center for Atmospheric Research (NCAR). The RCPs were chosen to represent a broad range of climate outcomes, based on a literature review. Scenario A2 and RCP 8.5.

Ozone 199
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Devil in the Details: World Leaders Scramble To Salvage and Shape Copenhagens UNFCCC Climate Summit

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At issue is the 2012 expiration of the Kyoto Protocol, a binding but effectively unenforceable 1997 treaty that had set greenhouse gas (GHG) emission reduction targets for 40 industrialized countries, referred to as Annex 1 countries, yielding an average GHG reduction of 5.2% Climate Change And The IPCC Fourth Assessment Report.

Climate 236
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Nielsen global survey finds concerns about climate change slipping behind concerns over other environmental issues; air and water pollution top worries, pesticide use #3

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Other environmental concerns have pushed ahead of climate change on a global average basis. Three out of four global consumers rated air pollution (77%) and water pollution (75%) as top concerns, both increasing six percentage points compared to 2009. Source: Nielsen. Click to enlarge. Source: Nielsen. Click to enlarge.