For the second year in a row, Scientific American is dedicating its September issue to environmental issues. Last year it was a generic survey of energy, poverty and population related issues (based on the assumption that quality of life and energy consumption are directly related).
This time around the main topic of discussion is the future of energy, or more specifically energy solutions for a sustainable world. With global warming accepted as a fact by everyone with brains at the top of their heads (that is, everyone other than companies hungry for more money and the politicians at the helm of the USA and Australia), the challenge is on how to maintain continuous improvement in life style while maintaining the environment as opposed to destroying it.
Reading the magazine, you learn how the two concepts don't contradict one another (as certain self interested parties would tell you). By simple means, such as the stopping of deforestation activities, we can't have the cake and eat it too.
Personally, I believe this is the number one challenge humanity faces today. It's definitely more important than the fight over certain bits of gravel that are supposedly holy.
Anyway, if you can get a hold of it have a go - the September 2006 issue of Scientific American.