Examine how the Himalayas were created, and journey to Ireland's Giant's Causeway, where a continent split into two creating America and Europe.
The epic story of four-year-old Marina, who was raised by monkeys after being kidnapped and abandoned in Colombia.
After a quiet winter, snake-hunters Simon and Nadine Keys are desperate for work. Soon they'll face a cobra and wrestle with a black mamba.
Some shark species can survive in freshwater as well as salt. Zeb Hogan tries to track down the biggest and rarest Australian examples.
Thailand's giant stingrays and the whiprays of Australia are said to grow up to 16 feet and 1,300 pounds - among the biggest freshwater fish.