CCTV footage shows a man fainting at the station and inadvertently knocking the woman off the metro platform in Buenos Aires, Argentina.
The prime minister repudiated claims from Donald Trump that her agreement with the EU could harm US-UK trading relations.
A truck driver had a narrow escape after his vehicle smashed through the railings of a tall bridge - from which he was left dangling.
Argentine rescue workers are responding to a fatal commuter train crash.
A two-level train slammed into another that had stopped between stations during the morning commute west of Buenos Aires.
Firefighters and police are pulling passengers from the wreckage and helicopters are taking people to emergency rooms.
Train operator spokesman Pablo Gunning said there were "various fatalities".
The accident happened on the same line that the government took over after a crash blamed on brake failures caused 51 deaths and 700 injuries last year.
At least three people are reported dead and 150 injured after two commuter trains collided in Argentina.
CNN affiliate Canal 9 says the crash happened in a western suburb of the capital Buenos Aires this morning.