Global warming brings on record cold in parts of U.S.

This woman rugs up against
 the cold in New York.

A dangerous cold snap seized the northeastern United States on Saturday with temperatures in some areas set to fall below zero and Boston facing its coldest Valentine's Day in almost four decades.

Officials warned people to stay indoors away from what the National Weather Service described as "life threatening" cold.

New York City was bracing for its coldest night in 20 years.

Read the story in the Melbourne Age - “Dangerously cold weather grips New York, bringing coldest night in decades.”