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Desertification, drought, and despair—that's what global warming has in store for much of Africa. Or so we hear.
Emerging evidence is painting a very different scenario, one in which rising temperatures could benefit millions of Africans in the driest parts of the continent.
Scientists are now seeing signals that the Sahara desert and surrounding regions are greening due to increasing rainfall.
If sustained, these rains could revitalize drought-ravaged regions, reclaiming them for farming communities.
This desert-shrinking trend is supported by climate models, which predict a return to conditions that turned the Sahara into a lush savanna some 12,000 years ago.
Originally posted by Shirakawa
CO2 and heat significantly boost plant growing. It's the same principle of greenhouses. In past geologic eras, when life flourished, CO2 levels were up to 16 times times as high as current, modern levels. Climate was also hotter (up to 3-5 Celsius degrees, depending on the era), though not directly proportional to the amount of CO2.
[edit on 2009/8/4 by Shirakawa]
Originally posted by grover
reply to post by king9072
It is not pseudo-science...and it is to slur and discredit all of the scientists working on the issue.
The planet is warming...the question is...
is it all caused by man...
is it all caused by nature...
or is it caused by a mixture of both.
I tend to think that it is a mixture of both.
It boggles my imagination that some people...either for political reasons or simple ignorance of science cannot see how we can and do effect the environment is both positive and adverse ways.
The reason why there is debate in the scientific community about climate change is because that is how science works...
The reason why there is such misunderstanding and debate in the secular community about climate change is deliberate misinformation and a muddling of the waters by vested interests such as Exxon...and political meddling by those who oppose anything that could possibly be construed as liberal.
Originally posted by grover
For it to be a scam or conspiracy you would have to enlist the thousands of scientists world wide (not just Americans) who are studying this thing to go along with it and that is just plain ridiculous.
Originally posted by grover
Originally posted by grover
The planet is warming...the question is...
is it all caused by man...
is it all caused by nature...
or is it caused by a mixture of both.
Originally posted by grover
It boggles my imagination that some people...either for political reasons or simple ignorance of science cannot see how we can and do effect the environment is both positive and adverse ways.
Originally posted by grover
The reason why there is debate in the scientific community about climate change is because that is how science works...
Originally posted by grover
The reason why there is such misunderstanding and debate in the secular community about climate change is deliberate misinformation and a muddling of the waters by vested interests such as Exxon...and political meddling by those who oppose anything that could possibly be construed as liberal.