Hollywood actor and passionate environmentalist Leonardo DiCaprio is the creative force behind this film on the potentially devastating consequences of climate change.

Cameras follow Leo as he travels the world to see the causes and effects of global warming, including a trip to Delhi, the world’s most polluted city, and a helicopter ride over the North Pole to witness the melting ice caps.

It’s not all doom and gloom, with Leo hearing possible solutions from scientists and politicians, including Barack Obama.

There’s maybe too much of the actor showing his own importance by meeting the Pope or addressing the UN, but he makes a persuasive argument about this crucial issue.

Worthy but never dull.