An astounding cultural shift took place 150 years ago. Good science, hard work, and innovation propelled humanity into a world of convenience, comfort, and health that kings of old could never have imagined. It also cast a long shadow.Today, we stand at a cross-road. Will we continue to limit ourselves to 19th century fossil fuel inefficiencies and pollution, thereby denying future generations the affluence we enjoy? Or will we gather the courage to move into a cleaner, safer more abundant solar powered world?Using historical anecdotes as well as modern story-telling and basic science, this book describes how humans are changing the chemistry of our air and oceans. The great life-giving cycles that maintain a livable environment are being altered, causing wide range of consequences.Serious as the situation is, it is also an opportunity. Very real solutions, both technological and economic are addressed. There is a promising future that awaits if we, as a species, are willing to take on the challenges of growth and change.