Skyscrapers

Towering high above the horizon, skyscrapers are among the most incredible things humans have ever built. Readers will discover what it takes to construct such amazingly tall buildings, from what materials are used to how engineers predict the stresses a building will need to withstand. They will also find out how the earliest skyscrapers were built, how skyscrapers have grown taller and taller over time, and what kind of skyscrapers architects are planning for the future.