FORT MCMURRAY, Alta. - Actor Leonardo DiCaprio is the latest celebrity to visit Alberta's oilsands.
Sources involved with the visit say DiCaprio is doing research for an environmental documentary.
The Oscar-nominated star of "The Wolf of Wall Street" has a long history of involvement with the environment.
He sits on the boards of several international conservation organizations and started an environmental charity foundation in 1998.
The controversial oilsands development near Fort McMurray has seen a string of high-profile visitors in recent years.
They include human rights leader Archbishop Desmond Tutu, musician Neil Young and Oscar-winning film director James Cameron.
The visit follows a short video narrated by DiCaprio and focused on carbon pollution. The video (http://www.greenworldrising.org/
) does not attack the oil sands. Its aim is to advocate for carbon taxes and for alternative forms of energy.