Genetic breakthroughs have shed light on how life evolves in real-time. From filling in the missing links to creating a new species, in the last 50 years scientists have solved some of the biggest mysteries of evolution. In this episode, we look at revolutionary discoveries that shook the world and may shape our future.

It's not all about the pouches. These mammalian misfits are full of surprises, from flamboyant kangaroo showdowns to rattling koala mating calls. They might seem a bit bizarre but don't underestimate them. With unexpected superpowers and amazing adaptability, they have conquered a continent.

Mark has never had a girlfriend, but he wants love more than anything. Maddi and Mark are going on their second date at the Australian Museum. Olivia has had 'a bazillion' unrequited loves but is not ready to give up. Maddi dates a new man who impresses her with his musical talent.

Olivia meets someone who seems to truly get her. Andrew has found out about a speed dating event being held in town. He works on his jokes and James Bond impersonations before going to the dinner. Jimmy and Sharnae go on a special holiday together where Jimmy plans a romantic surprise.

To help Andrew in his search for love, relationship specialist Jodi Rodgers has come to work with him - on his dating skills. Olivia hasn't given up in her search for love. Today, she's on her way to meet someone new. She's meeting Jackson. Jackson likes origami and the smell of perfume. He hates the sound of nails on a blackboard and people slurping their tea. Jimmy and Sharnae are arriving at the Gold Coast for their first-ever holiday together. And Jimmy has a surprise in store for tomorrow.

As the journey continues, there's beauty and danger in equal measure. Charley and Ewan travel through the extraordinary Bolivian desert, but the sandy roads make all more difficult. The duo ride their electric bikes through the exotic and breathtaking countryside and all the way making a challenging ascent. The riders stay in a hotel made entirely out of salt before heading to La Paz. 'Bolivia' also shows some quality work done by UNICEF when it comes to educating and working with the children. McGregor and Boorman spend time with the kids before resuming their journey and ending with a ferry ride over lake Titicaca.