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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: steve harris who wrote (231891)	5/8/2005 12:52:04 PM
From: combjelly	Read Replies (2) \| Respond to of 1585058

"It amazes me how much power man has over mother nature." Concentrations of CO2 and the other greenhouse gases have been rising over the past few centuries, and at an increasing rate over the past few decades. Volcanic activity hasn't been increasing noticeably, nor have wildfires, and there just aren't a whole lot more mechanisms that could have that effect. powerpoints.wri.org arch.rivm.nl arch.rivm.nl Given the rate at which humans have been burning fossil fuels and increased farming areas with its attendant clearing, farm animals and wet areas for rice, they are the likely source of those emissions. As noted, the decrease in particulates in the air almost certainly are due to human sources, and were the likely source of those particulates in the first place. As noted in that one article, it cannot be disputed that increasing the levels of CO2 and the other greenhouse gases makes the greenhouse effect more pronounced. It is pretty inescapable that human activity is having some effect. While the degree might be debatable, the facts cannot. As far as the tornados and hurricanes, those are different. It is easy to perturb a system with global, low-level and persistent changes. It is a lot more difficult to deal with localized, high concentrations of energy.