Climate change is hot news???and the news isn't good. After nearly two hundred years of sleuthing, scientists have reached a sobering conclusion: Earth is heating up, and humans are to blame. In this book, author Rebecca L. Johnson tells a true tale of scientific mystery. Join nineteenth-century scientists seeking the cause of Earth's ice ages. Follow the trail of evidence showing how atmospheric gases affect Earth's temperature and how carbon dioxide traps heat. Alongside recent investigators, learn how carbon-belching machines are upsetting our planet's delicate heat balance. Then search for evidence in melting glaciers and polar ice, in ancient soil and fossils, in shifting sea currents and temperatures, and in unusual and dramatic weather patterns. As you see how scientists combine all this data, a complete picture of Earth's past, present, and future climate emerges. The picture isn't pretty???but fortunately, it's not hopeless either. This book offers many strategies for grappling with global warming. Scientists say if we act quickly, we may find ourselves coping with changes instead of courting catastrophe.
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