1. The New Inventors: July 27, 2011
2. Design and technologies

Who will make the finals? With no set rules in place, the contestants must mutually decide the cook time to create a dish, sweet or savoury, that best proves to the judges they have come back to win.

Engineering has built our modern world. Everything from skyscrapers to roads and air travel are here because of Engineering. But what happens when engineering goes horribly wrong? Go behind the headlines to uncover what really happened in the most notorious engineering accidents.

The race to finals week is on! The makers of the top three dishes from the mystery box challenge will battle it out for one last chance at winning immunity this season.

Phil Wood, from two of Victoria's finest restaurants, reveals that round one is a pressure test. Contestants have 75 minutes to replicate his dish: potatoes duchess with shiitake mushrooms and cauliflower.

This episode features designers Camilla and Marc. Hosted by SBS TV's iconic fashion guru, Lee Lin Chin.

Richard Ayoade is continuing his noble quest to find gadgets that can help with the bothersome tasks of everyday life. And if there is a task he hates above all others it's shopping - be it for clothes on the high street or for food in the supermarket. To assess whether gadgets can ease the pain, Richard first heads to the strip lit aisles of the supermarket where farmer and foodie Jimmy Doherty joins him to check out gadgets that include a robotic shopping assistant, a fruit ripeness reader and a food ethics scanner. Yes, a food ethics scanner. The stress of the supermarket is however nothing compared to the horror of clothes shopping, so Richard persuades actress Allison Steadman to accompany him in a busy department store to check out the latest in retail technology.

The ground conditions are extreme as five abandoned engineers seek to build an escape craft out of ship wreckage.

Hosted by TV's iconic fashion guru Lee Lin Chin, this episode features children's couturiers.

Spectacular bridges, breathtaking buildings, extraordinary structures. Our man-made world is awe inspiring, but in an instant, it can crumble before our eyes. Rob Bell investigates why sometimes our buildings and bridges fail with disastrous consequences, visiting the scenes of some of the world's worst disasters. From fatal design flaws and killer construction errors, these deadly mistakes cost lives and have taught engineers how to save them to make our man-made world a safer place.

Engineering has built our modern world. Everything from skyscrapers to roads and air travel are here because of Engineering. But what happens when engineering goes horribly wrong? Go behind the headlines to uncover what really happened in the most notorious engineering accidents.

In the battle for top five, contestants must choose two cloches and cook with the ingredients underneath. They can give up one cloche and select a third, however they must cook with the third ingredient.

Today's mystery box is inspired by colour. The dish can be sweet or savoury and contestants can access the pantry with the garden also in play. So why is Melissa so emotional?

Agriculture is facing huge shocks from climate change, and the world's agri-food system is also one of the biggest causes of climate change. How can our food practices become more resilient in the face of climate change?

In today's elimination contestants are challenged to cook a classic dish. Could this be Reynold's final cook in the MasterChef kitchen?

Richard Ayoade is continuing his noble quest to find gadgets that can help with the bothersome tasks of everyday life and this week he faces one of his personal Waterloos - a 'staycation' holiday! With the combined horror of picnics, days out and bracing walks in the countryside looming, Richard turns to comedian Phill Jupitus to hold his hand through his 'trial by leisure'. Gadgets are of course central to surviving his UK break and the two holiday makers enjoy a haul of tech that ranges from the world's tiniest caravan to 360 degree cameras, 300 litre ruck sacks and a pair of trousers that casually transform into a picnic table!

In a remote jungle, five expert engineers are stranded in a simulated crash site caused by a flash flood and must salvage parts from the wrecked vehicles to build a boat.

In this episode, Kevin, Michelle and Damion explore five homes that excel in craftsmanship and use of materials before Kevin reveals the overall winner of the RIBA House of the Year award 2019.

Three heavy hitters of the competition go head to head. Who will make top six?