John Metcalfe

This Tiny Electric Motor Gives Your Bike a Sneaky Boost

The Vivax Assist is perfect for folks who want to (secretly) convert to an e-bike.

An Ultra-Visible Bike Helmet That Glows Like a Furnace

Torch's headgear doubles as an LED safety light.

San Francisco Wants to Lower Bike Injuries by Raising Bike Lanes

The idea is to keep motorists out of cycling space.

If It's New York vs. San Francisco, Only Waggish Cartoons Will Do

Garbage mounds and delayed trains, or annoying techies and no nightlife?

The Nepal Earthquake Was So Powerful It Shook the U.S.

Seismic sensors picked up the massive quake from across the world.

A Dead Sperm Whale in the Bay Area Gets Burned and Graffitied

The world's biggest toothed predator receives an ignoble send-off.

Hungry Sea Lion Pups Are Showing Up on San Francisco Streets

The creatures appear to be desperately in need of food.

A Sixth of the World's Species Could Risk Extinction From Global Warming

Losses will accelerate the hotter the planet gets, according to new research.

Vandals Built a Brick Wall in the Door of This German Train

It's like the commuter version of The Cask of Amontillado.

Simulate the Experience of Actually Having a Friend With the 'Selfie Arm'

Get ready to cringe.

One 'Solution' to Urban Air Pollution: Let's Live in Bubbles

This architectural concept sounds like something from Under the Dome.

The Port of Oakland Will Shut Down to Protest Police Violence

In a rare sign of solidarity, shipping owners are supporting the day-long protest.

Chile's Calbuco Volcano Turns Brazil's Skies an Eerie Purple

The new color scheme is neon-eggplant.

Zone Out to a Live Cam of Harrisburg's Fluffy, Baby Falcons

Mom is doing squats on them at the moment.

A Monthly Guide to Peak Tornado Season in America

Where and when you'll normally encounter the most violent twisters—mapped.

Watch a Flood Turn a Sydney Train Station Into a River

At Bardwell Park, waters crested to the level of the platform.

The World's Most Polluted Bird Hails From Vancouver

The city's toxin-ridden hawks are so contaminated they're "flameproof."

Chile's Calbuco Volcano Is Creating a Hellish Spectacle

Nature tries to imitate nuclear armageddon.

Russia's Wildfire Smoke Has Wafted Over America and Led to Some Incredible Sunsets

Abnormally warm temperatures have fueled deadly blazes in Siberia.