num_pages: 80
description: Traces the history of human migration; discusses the influence of agriculture, energy, and industry on population growth; and examines the effects of overpopulation, pollution, and disease on mankind's future.
language: English
title: Walking the Earth: The History of Human Migration
titlecomplete: Walking the Earth: The History of Human Migration (Exceptional Social Studies Titles for Upper Grades)
ratings_count: 4
publisher: Twenty First Century Books