Tall buildings often have tuned mass dampers hidden inside their structures to stabilize them against the wind. Those tuned mass dampers are huge and heavy and help limit a building’s movement by swaying in the opposite direction of the building. That is, if the wind is making a skyscraper sway to the right, the damper will sway to the left to dissipate the kinetic energy, and reduce the, um, swaying. What’s interesting is that the Burj Khalifa, the world’s tallest building, doesn’t have that.
The fast-growing global drone industry has not sat back waiting for government policy to be hammered out before pouring investment and effort into opening up this all-new hardware and computing market.
If we want to someday live on Mars, spaceships won’t be enough. We would need a Martian city—and this is how we might build one.
Without much fanfare—and as quietly as a construction project can be—a new neighborhood is taking shape on the west edge of Manhattan. It’s the largest private real estate project the US has ever seen. But neither its size or cost are what make it interesting.
THE KILLERS ROLLED slowly down the narrow alley, three men jammed onto a single motorcycle. It was a little after 11 am on July 31, 2013, the sun beating down on the low, modest residential buildings lining a back street in the Indian farming village of Raipur. Faint smells of cooking spices, dust, and sewage seasoned the air. The men stopped the bike in front of the orange door of a two-story brick-and-plaster house. Two of them dismounted, eased open the unlocked door, and slipped into the darkened bedroom on the other side. White kerchiefs covered their lower faces. One of them carried a pistol.