Jeddah Tower

The three engineering thresholds that separate ordinary high-rises from supertalls and megatalls — and why you can't just scale up.

Six questions on high-rise engineering, from steel breakthroughs to whether cities sink under their own weight.

From garden sheds to the Burj Khalifa — what holds up our structures and why it matters.

From vortex shedding to the elevator paradox, Herman and Corn explore the physical and economic limits of building the world's tallest towers.