US President Joe Biden has cancelled permits for the controversial Keystone XL pipeline on his first day in office.
The pipeline had been projected to carry oil nearly 1,200 miles (1,900km) from the Canadian province of Alberta down to Nebraska, to join an existing pipeline.
Environmentalists and Native American groups have fought the project for more than a decade.
Development of the pipeline was blocked by the Obama administration in 2015, but President Trump overturned that order and allowed it go ahead.
