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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