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We Still Don't Know Why Men Find Ovulating Women More Attractive

Are you in a public place? Look around. Can you tell whether any of the women you see are ovulating, just by looking at them? Neither can anybody else. But several small studies have suggested that men nevertheless find women’s faces more attractive when they’re most fertile. No one knows what signals the men are… » 7/01/15 7:00pm 7/01/15 7:00pm

Zurich Installed 4,500 Street Sensors to Count Every Car in the City

Congestion pricing—the implementation of high tolls to keep cars out of congested downtown areas—is one of the most effective ways to reduce traffic and emissions. Zurich's plan goes above and beyond that, using a network of sensors to track the number of cars that enter its downtown and prevent more cars from… » 10/16/14 3:41pm 10/16/14 3:41pm

Every City Should Give Seniors a Card That Extends the Crosswalk Time

We've all seen what happens when someone can't cross the street in the allotted signal time—the pedestrian gets frustrated and drivers get mad. A program in Singapore lets seniors swipe a card at an intersection so the signal will give them extra time to cross. It's a smart solution to a problem that's increasingly… » 8/07/14 1:43pm 8/07/14 1:43pm

What the World Would Look Like If You Could See Cell Phone Signals

There are thousands of invisible signals bouncing around us all the time, and the world would be a very different place if we could see them. Visualizer extraordinaire Nickolay Lamm already showed us what the Wi-Fi noise would look like, and now he's back to illuminate the cell phone signals all around us. It's trippy. » 12/11/13 11:03am 12/11/13 11:03am