John Metcalfe

The U.S. Faces Longer Summers of Worsening Ozone Pollution

Scientists have linked a warmer climate to a 70 percent increase in unhealthy summertime ozone levels.

Someone's Come Up With an Ashtray That Rewards Smokers for Not Littering

"Fumo" emits happy beeps and blipping lights anytime it's fed a cigarette butt.

The Ocean Floor Is Littered with Humanity's Garbage

Researchers say they were "shocked" to find so much plastic, glass, and fishing equipment all over the seafloor.

Can You Guess Which U.S. States People Most Want to Flee?

Everybody wants to get out of Illinois and Connecticut, it seems, and nobody wants to leave Montana.

San Francisco Sure Does Order a Lot of Cat Food

The Bay Area's online shoppers also show a rabid desire for toilet paper, protein powder, and (uhm) mayonnaise.

April Had a Record Number of Big Earthquakes

This year there was a typical pattern of quake activity up until the end of March, and then things went bonkers.

California's Metros Take the Prize for 2014's Most-Polluted U.S. Cities

But they're not alone: roughly half the nation lives with unhealthy concentrations of ozone or particulate pollution.

New Evidence That Urban Water Pollution Is Harming Birds

Researchers have linked the polluted run-off from cities to hormonal problems in chicks.

Bike Polo Is a Lot More Violent Than You Might Imagine

A buffet of body checking, face plants, and butt-on-head brutality.

NASA Sheds Light on This Week's Deadly Tornado Outbreak

A space-based animation shows how fierce storms are sowing destruction over the South.

A Striking New Way to Visualize Mobility

This tool shows how far you can travel in 10 minutes in ghostly splotches and tendrils.

An Aerial View of China's Colossal Dust Storm

It's said to be the largest sandstorm to hit northern China in 10 years.

Who Gets Permanent Work Visas in America?

When it comes to getting a visa approved, it helps if you work in the finance sector.

This Guy Knows Why People 'Unfriend' You on Facebook

It's probably either because you're an opinionated loudmouth or just boring.

The High-Tech Shoes That 'Tickle' You Directions

Wearable technology continues to get weirder with these GPS-guided "vibrotactile" sneakers.

The South Korea Ferry Disaster Can Be Seen From Space

The massive response to the deadly accident is so bright that it shines like a little city.

Peek Inside the Imaginary World of London's Anti-Litter Fairies

Here are a few short films about the hard-working construction crews who dispose of your trash.

Mapping More Than a Century of Major Earthquakes

A comprehensive look at which parts of the world have suffered historically large quakes.

A Grim Photographic Tribute to the BP Oil Disaster

A look at one of humanity's worst oil calamities from one of its most renowned documentarians.