TV Guide Sky Nature Saturday

The veteran naturalist examines the world of flight, travelling across the globe to chart the evolutionary story of those creatures who seemingly defy the rules of gravity by taking to the air. Initially focusing on insects, Attenborough meets a descendant of the dragonfly, before examining the Atlas beetle, which tends to restrict flight to times when it needs a mate or a fresh supply of food. More aesthetically pleasing is a group of beautiful tropical butterflies, followed by an in-depth study into the blow fly - the jet fighter of insects

The veteran naturalist visits the jungles of Borneo to meet creatures that like to glide through life - the harlequin tree frog and the little-known colugo - often referred to, incorrectly, as a flying lemur. He also has a CGI-assisted encounter with the first true vertebrate flyer, the pterosaur, receives a flying lesson from a small flock of swans at Loch Lomond in Scotland and encounters the planet's largest species of bat

First of two programmes about some of earth's most dangerous creatures, which lurk in the oceans, the forests, swamps and deserts. In Australia, meet the world's most venomous snake, and in nearby oceans, discover the deadly nature of the marine creatures that share these tropical waters

Exploring more of earth's dangerous creatures, beginning in the South American rainforest with the poison-packed golden dart frog, which harbours enough poison to kill 10 men. Plus, a visit to Sydney, Australia, home of the world's most venomous spider