Weekly news update on climate change: May 1

Journal
- Obama Looks to Protect Reefs From Souring Seas - Science - 4/15/09
- Archaeology: A New Look at the Mayas' End - Science - 4/24/09
- Atmospheric Science: Shifting Gear, Quickly - Science - 4/24/09
- Temperature sensitivity of drought-induced tree mortality portends increased regional die-off under global-change-type drought - PNAS - 4/29/09
- Changes in biogenic carbon flow in response to sea surface warming - PNAS - 4/29/09
- Time to act - Nature - 4/30/09
- Impact of historical land cover change on daily indices of climate extremes including droughts in eastern Australia - Gephysical Research Letters - 2009
- California in clean-fuel drive: State rule says biofuels aren't so green - Nature - 4/30/09
- Japan goes for the sun: Government pushes to regain national lead in solar-energy research - Nature - 4/30/09
- New UK coal must be partly 'clean' - Nature - 4/30/09
- Climate crunch: A burden beyond bearing - Nature - 4/30/09
- Climate crunch: Sucking it up - Nature - 4/30/09
- Overshoot, adapt and recover - Nature - 4/30/09
- The worst-case scenario - Nature - 4/30/09
- Climate change: Too much of a bad thing - Nature - 4/30/09
- Greenhouse-gas emission targets for limiting global warming to 2 °C - Nature - 4/30/09
- Warming caused by cumulative carbon emissions towards the trillionth tonne - Nature - 4/30/09
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