Actor Don Cheadle has been honoured with the title of United Nations Goodwill Ambassador For The Environment, reports PerezHilton.

Apparently Cheadle joined the UN last year to head their climate change campaign, and has since done some amazing things. Not only has he spoken with many important leaders, he has also got then to agree to sign a treaty limiting greenhouse has emissions.

Because of his good work, Cheadle has been honoured with the new title, which will be celebrated next month in Rwanda.

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Naomi Watts has joined the UN in its fight against AIDS, according to Reuters.

Watts, an Oscar-nominated actress recently seen in the remake of King Kong, said she “could not sit around and watch people die.”

She was recently appointed special representative for UNAIDS, which is the UN department that deals directly with the AIDS crisis in countries in Africa.

Watts was at a news conference in New York showcasing the UN?s new AIDS awareness campaign called ?4-for-everyone? which focuses on prevention, treatment, care and support.

Watts is not the only celebrity to get on board with the UN. She follows in the footsteps of Michael Douglas, Angelina Jolie, Nicole Kidman and Danny Glover.

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