Imagine the earth temperatures below freezing and covered completely in ice. Our last ice age may have ended around 12 000 years ago but it wasn't the only one. The earth has had many ice ages, constantly changing from hot to cold and back again. But what causes this to happenand most importantly, are we due for another oneRuss Ferrett, author of Builders of the Past and When the Earth Moves: Earthquakes & Volcanoes, takes us on an icy journey through what really happened in the ice ages. Where does snow and ice come from? How do glaciers form, grow and move? And what happens when an ice age ends and everything begins to melt?
About the Author
Russ Ferrett is an avid traveler. He visited and explored every site featured in this book and he or a member of his family took all but one of its photographs. His travel, along with 40 years of teaching geography and history to children, makes him eminently suitable to write a book of this breadth. He has also written When The Earth Moves: Earthquakes and Volcanoes in this series.