Hawkesbury River Study: CO2 improves tree growth, drought tolerance

Guest essay by Eric Worrall According to Belinda Medlyn, a theoretical ­biologist with Western Sydney University, trees exposed to enhanced CO2, in the gigantic open air Hawkesbury River climate study, grow 35% faster than their neighbours in the control group. “Either they’re getting more carbon for the same amount of water, or they’re getting the…

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Slaying the 'Slayers' with Watts – part 2

Light Bulb Back Radiation Experiment Guest essay by Curt Wilson In the climate blogosphere, there have been several posts recently on the basic principles of radiative physics and how they relate to heat transfer. (see yesterday’s experiment by Anthony here) These have spawned incredibly lengthy streams of arguments in the comments between those who subscribe…