A teen who was arguing with a woman on a Snapchat call held a 30-centimetre kitchen knife between his cell phone and a five-month-old baby before asking her mother, “Should I do it?”.

The US Centers for Disease Control and Prevention is planning a large study into potential connections between vaccines and autism.

Christchurch Hospital is short 120 nurses, according to an internal system that is meant to gauge how many people are needed for safe staffing levels.

Actor Gene Hackman was in an advanced state of Alzheimer's and died of heart disease and other factors likely days after his wife, Betsy Arakawa, died of a rare syndrome spread by mice.

Millions of Australians have been warned to stay vigilant as ex-tropical cyclone Alfred crosses on to the mainland, with the worst of the heavy rain and flash flooding still to come.