Watch part two

Spurred by the devastating threat of climate change and escalating fuel prices the world is on the verge of a nuclear renaissance.

Yet,for many people nuclear is still considered an "evil" energy source – dirty, dangerous and expensive. At the forefront of this view are green activists.

However some have broken rank and committed the cardinal sin of the green movement by embracing nuclear energy and promoting it as the solution to the world's climate crisis.

People & Power investigates how some of the world's leading green activists woke up to its environmental and economic benefits.

With climate change threatening to send the world spiraling into meltdown, the film challenges the big claims of the anti-nuclear lobby and asks whether the world can really survive without nuclear energy.

Should the greens treat those who are in favour of nuclear energy as pariahs or are they in fact environmental pioneers?