From hiking to river rafting, Grand Canyon is filled with outdoor adventures. But without careful planning, a trip there can be overwhelming. Grand Canyon: The Complete Guide breaks it down and gives you everything you need to make the most of your time in the park. Whatever your interests--hiking the Bright Angel Trail, riding mules to Phantom Ranch, watching sunset from Hopi Point, relaxing at a historic lodge--Grand Canyon: The Complete Guide...

Series surveys the geology, history, culture, and ecosystems of great geographical features, with this book focusing on the Nile River.

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"Famed geologist Walter Alvarez expands our view of human history by revealing the cosmic, geologic, and evolutionary forces that have shaped us. Big History, the field that studies the entire known past of our universe to give context to human existence, has so far been the domain of historians. In The Little Book of Big History, geologist Walter Alvarez--best known for his 'Impact Theory' explaining dinosaur extinction--makes a compelling case for...