2017 ozone hole smallest since 1988 | | This year's ozone hole peaked in September at its smallest observed extent since 1988, due to an unstable and unusually warm Antarctic vortex in 2017. | | |
2016 greenhouse gases at record high | | As climate talks open in Bonn, Germany this week, negotiators are considering a report from the World Meteorological Organization, urging action now. | | |
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