Wild Nights: Night In The Savannah World, 8pm What makes this new wildlife series unique is its use of cutting-edge technologies, including high-definition, infrared and heat detection cameras, light amplifiers and electronic image reconstitution. A massive, luminous mat is used to view nocturnal sea life. In a forest, hundreds of tiny red bulbs are placed in the branches of trees to produce a light invisible to animals, but clear to humans with infrared cameras. These techniques allow viewers to discover the behaviour of animals that are dormant during daylight hours: barracudas on the prowl, hyenas pestering a family of slumbering baboons and glow-worms socialising. Tonight's series opener features a watering-hole in the savannah lit by a circle of luminous helium balloons floating more than 40 metres above the ground and capable of illuminating 10,000 square metres, revealing the night-time activities of leopards, lions and giraffes.