Two roadside bombs exploded minutes apart near a crowded bus station in central Baghdad at about 8:30 a.m.

CNN: 12 killed in Baghdad area attacks

From the windows of our crowded charter bus, Toronto seemed like any other non-descript North American city.

BBC: This is Toronto Week

He was seized off a crowded school bus Jan. 29 after authorities say the gunman shot the driver dead and took him to the bunker where he was held until Monday's rescue.

NPR: FBI: Ala. Captor Rigged Bunker, Waged 'Firefight'

Classes will be more crowded, school-bus rides longer.

ECONOMIST: School funding: Public good, public cuts | The

And the alternative often is a traffic-slowed bus, or a crowded underground train traversing a highly walkable distance.

WSJ: Timing an Urban Stroll Isn't a Walk in the Park

There surely are nut-jobs who would like to blow up Americans, but they could do that on a bus, on a crowded street during rush hour, or any other place where a large number of people are gathered.

FORBES: Local Government Stupidity Contest

The bus she takes is often cold and crowded, she says, and it broke down entirely not too long ago.

BBC: America's commutes start earlier and last longer

On a recent day in a train station, commuter Alejandro Gonzales said that a million more people are now crowded onto the subways since Transantiago did away with many of the old bus routes.

NPR: In Chile, Commuters Sue City over Transit System

Parks off his bus simply because she entered through the front door when the back door was too crowded.

WHITEHOUSE: President Obama Dedicates a Statue Honoring Rosa Parks

The traveler stumbles bleary-eyed into the crowded arrival hall, only to face another two- to four-hour journey either by bus or train (a taxi ride would bankrupt an Arab prince) into the city.

CNN: HARD LANDING