metro
A Mexico City metro overpass collapsed, killing at least 20 and injuring dozens.
The cards are already being resold on eBay.
"We blew it," said Metro editor Wendell Jamieson.
WHAT'S HAPPENING
Barack Obama's first inauguration drew a record crowd of 1.8 million.
But not everyone is on board with these women-only train carriages.
Minneapolis-St. Paul transit police are especially hard on American Indians.
This actually happened.
"Passengers' strange behaviour may make some feel uneasy, cause onlookers to panic and could easily lead to security risks."