Metropolitan Transportation Authority / Patrick Cashin via Architizer
We've geeked out over the MTA's underground photography before, but new photos from the Long Island Railroad's East Side Access expansion are nothing short of other-worldly. It's the largest transportation project underway in the country. When completed, the line will terminate in these caverns under Grand Central. See more of the project on the MTA's Flickr page.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.