The extinction of the dinosaurs left a power vacuum. Enter the dragons: powerful modern reptiles which still dominate large areas of our planet. Ruling Reptiles goes in search of the modern reptiles that have inherited the dominant role.

The second programme focuses on the amazing natural technology that makes reptiles such a successful group. Are reptiles the bio-technology wizards of the animal world? If you count sprinting on water, shooting blood from the eyes, spitting poison at their enemies, navigating by magnetic fields, converting ribs into a hang-glider, or communicating emotions in colour then, yes, they are!

Alligators on golf courses, geckos in hotels, chameleons in the garden and pampered pet pythons - reptiles are invading our space! So what will the future role for these living cousins of the dinosaurs be? Will reptiles give us better biotechnology and medicines? Or a 'Jurassic Park'?