In light of the extinction crisis facing the Earth and using the dodo's story as a cautionary tale, this documentary looks at the different causes of species extinction and asks whether there is anything we can do to stop them.

based on Jared Diamond's Pulitzer Prize-winning book of the same name, Guns, Germs and Steel traces humanity's journey over the last 13,000 years - from the dawn of farming at the end of the last Ice Age to the realities of life in the twenty-first century.