BBC Three Tuesday

A round-up of the day's news

Part two of two. Steve Backshall explores the jungles of Costa Rica, where he has an encounter with a giant boa, witnesses the strike speed of a viper and examines a poisonous frog

Steve Backshall treks into a remote part of the Darién jungle in Panama to search for the harpy eagle. Along the way, he encounters a deadly racer snake and giant bullet ants

The trio test high-performance hatchbacks the Citroen DS3 Racing, Fiat 500C Abarth and Renaultsport Clio 200 Cup, and Ross Noble is the celebrity driver

The reality show returns to its original setting in Samoa, reuniting some of the most memorable contestants from past series

There is a distinct difference between the two Tribes, as the Heroes live in solidarity, while the Villains struggle in the elements and are sent back to Tribal Council once again

Documentary exploring how a father and son from north Wales built one of the UK's biggest underground steroid empires, selling to gym-goers around the world

As the steroid lab thrives, father and son grow close, but greed creeps in. Macaulay finds out he's being short-changed just as the police close in

Father and son reunite, but the trust between them is broken. As the police close in, Macaulay's paranoia grows as his addiction gets out of control

The rise in eating disorders among children and young people, including interviews with young people who are living with disordered eating and those in recovery

Part one of two. The story of Alex Batty, who went missing when he was 11 on what was supposed to be a short family holiday with his mother and grandfather