The plan to tuck a park under Toronto's ugly elevated expressway
November 24, 2015, 10:11 a.m. by Matt Hickman
When you can't demolish it, create 10 acres of neighborhood-connecting open space under it.
Liberty Bridge is a glorious, pedestrians-only pipe dream
October 14, 2015, 5:48 p.m. by Matt Hickman
Linking Manhattan with Jersey City, this Hudson River-spanning fantasy footbridge is gaining online support.
Student invents ion thruster that breaks NASA's fuel efficiency record
September 27, 2015, 5:41 p.m. by Bryan Nelson
Mars and back on a tank of fuel? Ion drive could revolutionize space travel.
The walkway to Old Faithful is now paved with recycled tires
September 17, 2015, 3:30 p.m. by Matt Hickman
Forgoing asphalt helps make Yellowstone's gushing geothermal landmark even gushier.
Will moving walkways replace trains on London's Circle line?
September 10, 2015, 3:10 p.m. by Matt Hickman
Likely not, but it's fun to imagine zipping along a train-less Tube.
The medium is the message as Sydney installs electronic traffic signs
July 31, 2015, 1:07 p.m. by Lloyd Alter
There's no more confusion as solar-powered signs change with the times.