John Metcalfe

Nazim Uddin/Flickr

Los Angeles Ponders Morality of Circus Elephants: This Week in Bans

Also, Mumbai outlaws spitting tobacco on buses and Swaziland bans clothing that could tempt men to rape.

Scazon/Flickr

People Trying to Reduce Air Pollution Might Be Inhaling Even More Pollution

Bicyclists and public-bus commuters in San Diego are exposing themselves to a whole lot of crap in the air, according to new research.

This 12-Year-Old Parkour Athlete Will Amaze, Scare the Crap Out of You

Robbie Griffith is starting to get noticed in the urban sport, and it's easy to see why.

What Produces More Light Pollution in Australia: Cities or Wildfires?

Parts of the outback are lit up with so much flame they look like huge metropolises at night.

Weird Lights in the Sky Appear Once Again Over San Francisco

What is causing these glowing orbs over the Mission District?

Dave Allen Photography/Shutterstock

Seattle Tries Again to Outlaw Assault Weapons: This Week in Bans

Also, a Canadian city goes after bullies and a Chicago alderman takes the war on pigeons to a new level.

9 Technologies for Building the 'Road of the Future'

Cities around the world are reinventing the highway with things like de-icing pavements, color-changing paint and wind-powered street lights.

The Deadly Fun 'Sport' of Russian Train Surfing

Sure, it could kill you, but there's no thrill quite like riding on the roof of a 125 mph commuter train.

YouTube

It's Not Cool to Bring Ponies Onto Berlin's Subway

To its credit, the animal behaved better than many public-transit riders.

NASA

A New, Highly Detailed Image of North Korea's (Lack of) Electrical Infrastructure

The energy disparity between Pyongyang and its neighbors is clearer than ever in this awesome NASA satellite shot.

auremar/Shutterstock

Too Portland For Portland: Local Man Offers to Eat, Excrete Gourmet Coffee Beans for His Neighbors

Please don't let "Human Kopi Luwak" become a thing.

mikeledray/Shutterstock

Why Is Santa Cruz Awash in Dead Squid?

Beaches are littered with a trail of rotting cephalopods stretching for 11 miles.

Inside the Incredible Secret Mission to Climb Europe's Tallest Building

Russian adventurers dressed like construction workers to reach the ice-covered pinnacle of Mercury City, which is taller than London's Shard.

The Nastiest Cyclist vs. Driver Videos of 2012

The Battle of the Commute rages on, as this painful-to-watch footage shows.

Jonathan Lansey

BEEEEEEEEP! This Bike Sounds Like a Car Horn

The "Loud Bicycle" prototype can blast careless drivers with a 30-second trumpet that's as loud as a rock concert.

Beijing Tries to 'Rectify' Jaywalkers: This Week in Bans

Also, Albuquerque is left vulnerable after outlawing barbed wire and a British ice cream-truck driver who rocked too hard is shut down.

NASA

5 Tips From NASA for Catching Tonight's Geminid Meteor Shower

An expert explains why light pollution won't totally destroy 2012's final and most dazzling space show.

Humongous Swollen Duckling Paddles Down the Thames

From what hellish port of call did this monstrous waterfowl come?

Decker Bullock/Sotheby's

The Bay Area's New Most Expensive House Goes Up for Auction

The $45 million price tag will get you a huge lap pool (with cabana), an art gallery, a movie theater, and a 2,000-bottle wine cellar.