Planeta Viviente
In his previous natural history series, Attenborough had been reticent about describing man's impact on the natural environment (unless it was relevant to the content, as in the last episode of "The Living Planet" or "The First Eden"). However, since "State of the Planet", the presenter had become more publicly outspoken on the subject. In the final programme of this series, "Food for Thought", he took the opportunity to put the case explicitly for finding ways to deal with overpopulation.