John Metcalfe

This Huge Land Stain Near Calgary Was Made by Hail

A ferocious storm this weekend left a trail of hail 75 miles long in Alberta.

The Best (and First?) Sci-Fi Novel Ever Set in a Wastewater Treatment Plant

An "ancient evil" has awoken in the Bay Area and is making life hell for sewage workers, according to a new novel by a real-life sewage professional.

A Closer Look at Portland's Giant, Carnivorous Street Lights

Four monstrous pitcher plants light up a new pedestrian pathway downtown ... if anybody's brave enough to use it, that is.

The Western U.S. Heat Wave Is So Bad Pavement Is Causing 2nd-Degree Burns

Take a barefooted walk across a Las Vegas parking lot, receive skin grafts and weeks in the hospital.

Nearly Half of All American AIDS Cases Are Found in Just 12 Metropolitan Areas

The HIV scourge continues to disproportionately affect poor urban areas.

A Nighttime Mystery Over the Biggest Cities in Texas

See if you can spot all the different light sources in this International Space Station image.

The Bay Area Survived Its First Morning Without a Metro

The BART strike made for a crowded commute, but not a nightmare.

How a New Bird Species Was Discovered Right in the Middle of Phnom Penh

The Cambodian tailorbird somehow managed to elude detection for years, despite being loud and annoying.

The Saddest, Most Inspiring Story You'll Ever Read About Thumb Wrestling

James "Tigermonkey" Isaacs was having a rough year. Then he started thumb wrestling.

San Francisco's City Hall Is Now a Technicolor Rainbow

Never has a hub of governance looked so fabulous.

London Has an Impossibly Weird House That Defies Physics

OK, who dropped acid into England's water supply?

Say Hello to Solar-Paneled Clothing That Charges Your Phone

This "Wearable Solar" clothing allegedly can restore half of a phone's power when worn in bright sunlight.

A Helmet That Automatically Steers You to the Nearest Bike-Share Station

New Yorkers can mount this thing on their heads and never worry about finding a Citi Bike dock again.

The Supermoon, as Seen From Cities Around the World

This was the largest and brightest the moon will look until August 2014.

Aerial Views Show Just How Awful the Fire-Smog Over Singapore Has Become

And this could go on for several weeks.

Some People Are Really Upset About the Los Angeles Plastic Bag Ban

Your weekly roundup of what cities are banning around the world.

Your Bruised Shins Might Hate You For This 'Invisible Furniture'

Let me just walk across the room to get that – OUCH!

The Devastating Impact of 30 Years of Sprawl, As Seen From Space

The lightning pace of world urbanization is on display in these animated GIFs of Chicago, Dallas/Fort Worth, Hong Kong and other exploding metropolises.

Copenhagen's Gigantic New Mural Works Like a Flip-Book

The painting covers nearly 900 feet and looks like an animation to people driving by.