18 Jun '11, 12pm

Biologist stumbles on link b/w wildfires, nitrous oxide & climate change - listen to his surprising story here:

HUNGATE: That’s right. We started this experiment back in 1998 in a grassland in California where we actually changed the physical environment around test plots to try to simulate the environment of the future. We focused on four on-going global environmental changes. More CO2 in the atmosphere, so some plots have tubes that release extra CO2 into the atmosphere around the growing plants, and also warming, we have infrared heat lamps over some plots to make them warmer. Extra nitrogen deposition - some plots get an extra dose of nitrogen simulating higher industrial activity and its effect on the atmosphere in the future. And also rainfall, some plots have sprinklers that simulate more rain. So we had each of these changes by itself, and then in every possible combination with the other global changes - it was really complex.

Full article: http://www.loe.org/shows/segments.html?programID=11-P13-0...

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