The WORST seasons of How to Grow a Planet

Every season of How to Grow a Planet ever, ranked from worst to best by thousands of votes from fans of the show. The worst seasons of How to Grow a Planet!

In this TV programme Professor Iain Stewart journeys from the spectacular caves of Vietnam to the remote deserts of Africa and sees how plants first harnessed light from the sun and created our life-giving atmosphere. He describes how the plant kingdom has transformed a lifeless planet into our living world