The Native Nations Rise march was the latest mobilization in the years-long battle against the Dakota Access Pipeline.
In his letter of resignation, Mustafa Ali asked Pruitt to value the lives of poor and non-white people.
Meanwhile in Washington D.C., indigenous people from across the country and their allies are gathering for the Native Nations March.
On average, businesses saved $14 for every $1 invested in reducing food loss.
The mastermind behind the murder may remain at large.
The last, best chance to kill the oil pipeline is a series of legal challenges being pushed by tribes.
As they evacuated camp, water protectors set fire to tents according to tribal tradition -- one last blaze of defiance against the pipeline.
Trump revived the controversial tar-sands pipeline. What happens next?
This treasured American pastime has opened a climatic can of worms.