The Gotthard Base Tunnel, two parallel tubes of over 35 miles each through the Swiss Alps, is a ridiculously ambitious undertaking, one that has taken 14 years so far and still has a few left to go before it'll be operational. But the Swiss have achieved a major milestone today: One of the tunnels broke through, cementing the Gotthard's place as the world's longest tunnel.
Slot machine junkies and poker sharks could soon ride one of three futuristic high speed trains from Los Angeles to casino mecca Las Vegas. But that's assuming developers get on board with a tubular rail, a maglev transporter for cars, or an air-cushioned train.
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.