This episode investigates the rise of the phenomenon of ‘mega fires’ – blazing fires that cover vast areas of land and are nearly impossible to control.

Despite being an agent of huge devastation, natural fires don’t simply destroy life but can allow new plant-life and micro-organisms to emerge. But what does fire ignited by continued human presence do to the environment?

With satellite technology, computer animations, discover the effects that industry and greenhouse emissions have wrought on our planet.

From the series Cosmic Journeys.