Sky Nature HD Thursday

The far-from-lazy life of sloth bear mum Bibi as she is forced to fight drought, food shortages and predators to keep her two cubs safe

The sharks and rays that patrol Arabia's coral reefs for their prey, and the toxic fish that have perfected the art of disguise

As water flows from Australia's highlands into the seas, environmental changes set the stage for unexpected clashes between predators and their prey

When a fawn is found stuck in thick, toxic tar, Hope assembles her entire team to wash and care for it in a desperate bid to save its life

Chile's Atacama Desert, which stretches for 600 miles and is the world's driest non-polar region. From menacing volcanoes to resplendent flamingos, it is truly unique

The importance of Zambia's trees to its ecosystem, providing food, shelter and hunting grounds, and offering a haven for 60 species of mammals and 400 types of bird