John Metcalfe

Buffalo's Melting Snow Could Cause 'Significant Flooding'

Warm temperatures are expected this weekend, and that's not good.

So You've Decided to Map Sidewalk Poop in San Francisco...

Sorry to say you'll discover that much of it is attributed to humans.

Is the Sun Causing Spikes in Lightning?

Scientists say the star's magnetic field may be ratcheting up strikes by 50 percent.

Acid Rain Has Turned Canadian Lakes into a Kind of Jelly

A legacy of industrial pollution is allowing slimy ooze to thrive.

Japan Now Has a Traffic Signal Shaped Like Astro Boy

But can it aerate jaywalkers with retractable butt guns?

A Towering Wall of Snow Fell on Buffalo

It's one of the most striking lake-effect snowstorms in recent memory.

Mapping 20 Years of Major Meteor Impacts

NASA wants to use this project to predict Earth's next dangerous space rock.

Meet San Francisco's Newest Mayor, Who Is a Dog

Today City Hall celebrates Frida, a 6-pound chihuahua mix and very good girl.

This Dutch City Built a Glowing 'Van Gogh' Bike Path for Psychedelic Cyclists

The luminescent path is modeled after the painter's "The Starry Night."

Expect 50 Percent More Lightning in a Warmer World

You're going to want to start staying away from lone trees and flag poles as climate change continues.

Chicago Has More 'Avenues,' While San Francisco Prefers 'Terraces'

An analysis of roadway suffixes in six major U.S. cities reveals differences rooted in history.

San Francisco Is Painting the Streets with Historical Creeks

A placemaking project traces the city's long-buried arroyos.

This Water Bottle for Bikes Generates H2O From the Air

Under hot and humid conditions, "Fontus" claims to "make" 17 ounces of water in an hour.

Two-Thirds of the U.S. Is About to Get Really Cold

One expert explains the "polar vortex" as a pack of wild dogs.

What Will Be the Coldest Day in Your City This Year?

Crunching the numbers on the geography of winter's worst weather.

Is This the Oldest-Ever 3D Map of Transit Ridership?

The Germans built it with colored wooden sticks around 1913.

The Netherlands Gets the World's First Solar-Powered Bike Lane

Leave it to the Dutch to make cycling even greener.

A Map of San Francisco, After a Catastrophic Rise in Sea Levels

Imagining the bustling nautical society of the Bay Area archipelago.

New York's Rat Population Is Far Smaller Than You Might Guess

The latest tally of the city's rat horde dispels the myth that the city is home to "one rat per person."