Six machines that build a better world
Custom trucks assemble tunnels out of Lego-like concrete blocks.
Inhabitat's Week in Green: Hyperloop One's public test, and more!
It goes from 0 to 166 MPH in just 1.1 seconds.
Six smog-eating designs that purify the air
Algae helps take a bite out of pollution.
Inhabitat's Week in Green: Chicago's high-flying cable cars
Meanwhile, Lyft is preparing to debut self-driving taxis.
Six of the world's weirdest bikes
One doesn't even have pedals.
Inhabitat's Week in Green: The Karma Revero, and more!
Meanwhile, Ford is working on a 200-mile electric car.
Six robots inspired by real-life animals
Evolution has already done the heavy lifting.
Inhabitat's Week in Green: Solar Impulse's trans-Pacific flight, and more!
In other news, Apple donated some of its Earth Day proceeds to conservation efforts.
Six amazing underwater buildings
Sometimes the best view is below sea level.