As urban space shrinks, we build higher and faster than ever before, creating a new generation of skyscrapers. Super skyscrapers are pushing the limits of engineering, technology and design to become greener, stronger, smarter and more luxurious than their predecessors. This four-part series follows the creation of four extraordinary buildings, showcasing how they will revolutionize the way we live, work and protect ourselves from potential threats. Read more about each episode below.

• Corey Johnson