How have countries collaborated on a global scale to find solutions to increasing environmental problems.?

They haven't. Scientists have collaborated globally to discover what environmental problems exist, and have proposed solutions. Scholars have worked out ways that these solutions can be implemented through business and economic policy changes. Right now, business leaders are meeting in Copenhagen discussing approaches governments should be taking to address the problem of global warming. Countries have adopted resolutions condemning the problems, setting goals to be met for solving them and making speeches in the U.N. about how the challenges will be met. Actual action to address the problem? - nada.

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