Jimmy Barnes offers advice to his younger self

A lonely and friendless boy finds and untangles a hurt dolphin that loses it's tail in a crab trap. The boy believes the dolphin would be able to swim normally if it was given a prosthetic tail.

A decade ago Turia Pitt was running an ultramarathon when a grassfire caused burns to 65 percent of her body. Doctors weren't sure she'd survive, but she encapsulates what it means to have 'grit'. She joins Kurt Fearnley for a run, and a conversation about determination.

Scientist Veena Sahajwalla is a recycling revolutionary whose bold new ideas are helping reduce landfill. Now she's unveiling her latest brainchild, an invention which turns the discarded into the designer.