John Metcalfe

A Pair of Nuts Fly Through Rio de Janeiro's Vertical Labyrinth

Extreme-sports enthusiasts Jokke Sommer and Ludovic Woerth take a hair-raising ride through Brazil's urban jungle.

And the Cities Most in Danger of a Super-Flu Outbreak Are...

Researchers say lethal strains of influenza are most likely to arise next in coastal China, the Nile Delta and elsewhere.

What Kind of People Celebrate San Francisco's 'Pi Day'?

People who are very enthusiastic about irrational numbers, it turns out.

Is This a Good Way to Reinvent the Recumbent Bicycle?

Out of the Netherlands comes this unusual design for a streamlined commuting recumbent.

Moscow Says 'No' To New Mosques

The mayor says citizens are "irritated by people who speak a different language" and have "different manners."

New York's Green Roofs Are Crawling With Fungi

And the fungal communities are quite different from what's found in the city's parks.

Survey Claims That 75 Percent of People Use Cellphones in the Bathroom

One-quarter of men surveyed also reported sitting down to pee so they could use their phones with both hands.

Climate Change Is Making Canada Look More Like the United States

The vegetation around Winnipeg now looks as lush as what's growing in Minneapolis, according to a NASA-funded study.

Finally, a Good Reason to Send Somebody a Photo of Your Genitals

The  "STD Triage" app lets you email pictures of your "intimate problem" to a panel of dermatologists.

Coal Power Plants Are Killing Thousands in Europe: Report

A look at the health consequences of coal's rising popularity.

The Pan-STARRS Comet Finally Pops Up in North America

People from Oklahoma City to New York will get to gawk at the fuming iceball at last, which could be bright enough to see with the naked eye.

What Will Mike Bloomberg Ban Next?

For one thing, he's not happy with your iPod earbuds.

The Bay Lights Finally Turn On, and the Results Are Fantastic

For the next two years, San Francisco will get to stare at a shimmering, ever-changing galaxy of lights on the Bay Bridge.

Street-Stencil King Logan Hicks Gets a Pop-Up Show in L.A.

It's only for three days, so catch it if you can.

If You Tried to See the Bay Lights from Treasure Island, You Are Probably Angry Right Now

People who traveled east of San Francisco to view the Bay Lights could see nothing but cold rain and horrible traffic.

New Firefighting Tech Could Save Lives, Scare the Heck out of People

This device to "see" people trapped behind flames also makes them look supremely creepy.

Just Think of All the Things You Could Do With an Affordable Infrared Scanner for Your Smartphone

The Mu Thermal Imager, which detects drafty doors and windows, aims to be an affordable device for improving your home's energy efficiency.

Yup, That's a Gigantic Dog Peeing on This Orange County Building

And you thought your public art was gross.

Actually Worthwhile Advertising: a Water-Producing Billboard

The high-tech billboard transforms atmospheric moisture into drinking water for thirsty Peruvians.