People have been constructing tall buildings for thousands of years, for many different reasons. Castle walls kept people safe. Utility towers transmit TV and cell-phone signals. Observatories give people a bird’s-eye view of the world. Beautiful buildings stand out in the crowd. Skyscrapers provide housing for a lot of people. There are some good reasons for building up, and a few bad ones as well. With a growing global population, we will need more and more space to live, learn and work in. But what does that mean for the health of the planet? Can we do it sustainably? Tall buildings may be part of the answer.
