While fossil fuels are essential for growth in practically all economies, the resulting greenhouse gas emissions have serious adverse global effects on our climate. Dealing with this problem requires global cooperation.
As bio-energy becomes steadily more popular as environment-friendly energy source, the world’s energy demands will compete more and more fiercely with it food demands.
Some of the world’s largest supplies of energy – such as coal, tar sands, and deep-sea methane deposits – also poseparticularly large threats to the world’s environmental and climate systems.
A global 'water crisis' looms large for many developing countries. Managing the world’s water supplies involves navigating the conflicting needs arising from economic growth, poverty, food security, political stability and climate change.
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