Horizon Season 58 Episodes

Episode 1

Feast to Save the Planet

59 mins

MasterChef judge Gregg Wallace and mathematician Dr Hannah Fry take over a restaurant and invite five special guests to enjoy a dinner party with a difference, where they will be scored on the carbon footprint of every dish they choose. Food accounts for a third of all greenhouse gas emissions, so making informed choices about what we eat is more important than ever. Diners Sara Pascoe, Amol Rajan, Nikki Fox, Desiree Burch and Matthew Fort choose from a menu of tantalising treats, each of which tells its own environmental story. But will they be able to sort the eco-goodies from the eco-nasties hidden in each course? Gregg is with the kitchen team preparing delicious dishes and uncovering tips and tricks we can all use to cook more sustainably. Hannah is working with environmental scientists to reveal the carbon footprint of every single item on the menu and uncovering the latest research that can help us enjoy the food we love that doesn't cost the Earth.

Episode 2

Coronavirus Special - What We Know Now

In this third Horizon special, Dr Chris Van Tulleken is joined by his brother Xand and Dr Guddi Singh to take us through the latest developments and answer current concerns. Though the effect of the coronavirus pandemic has been devastating to many, the team reveal the breakthroughs in genetics, medicine and modelling that have provided a way out of this situation and given hope and confidence that, in the event of a future pandemic, we can take it on and win.

Episode 3

The Secret Science of Sewage

59 mins

Dr George McGavin and Dr Zoe Laughlin set up base camp at one of the UK's biggest sewage works to investigate the revolutionary science finding vital renewable resources and undiscovered life in human waste. Teaming up with world-class scientists, they search for biological entities in sewage with potentially lifesaving medical properties, find out how pee can generate electricity, how gas from poo can fuel a car and how nutrients in waste can help solve the soil crisis. They follow each stage of the sewage treatment process, revealing what the stuff we flush can tell us about how we live today, and the mind-boggling biotechnology being harnessed to clean it, making the waste-water safe enough to return to the environment.

Episode 4

Horizon Special: The Vaccine

With unique access to five vaccine teams around the globe, this is the extraordinary inside story of the unprecedented quest to develop and make vaccines to fight Covid-19.

Episode 5

Dolly: The Sheep That Changed the World

Horizon tells the full story for the first time with never-before-seen archive, revealing how on a small Scottish farm, a handful of the world's best genetic scientists worked in secret to crack the holy grail of life: cloning.