Horizon Season 57 Episodes

Episode 1

Addicted to Painkillers? Britain's Opioid Crisis

Dr Michael Mosley immerses himself on the frontline of our prescription painkiller habit. In America, it is an epidemic. Now, new evidence raises concern about the UK's use of prescription opioids.

Episode 2

Chris Packham: 7.7 Billion People and Counting

Naturalist Chris Packham investigates the impact a growing human population is having on the planet, asking whether the earth can sustain predictions of ten billion people by 2050.

Episode 3

Toxic Town: The Corby Poisonings

59 mins

The unknown story of the worst child-poisoning case since thalidomide, featuring a landmark legal battle by a group of mothers determined to uncover the truth.

Episode 4

Coronavirus Special - Part 1

Investigating the scientific facts and figures behind the biggest public health crisis in living memory as a new coronavirus takes an unprepared world by storm.

Episode 5

The Restaurant That Burns Off Calories

Fred Sirieix and Zoe Williams open a restaurant with a difference, where every calorie eaten must be burned off by a secret gym team.

Episode 6

Hubble: The Wonders of Space Revealed

59 mins

To celebrate the 30th anniversary of its launch, this film tells the remarkable story of how Hubble revealed the awe and wonder of our universe and how a team of daring astronauts risked their lives to keep it working.

Episode 7

The Great British Intelligence Test

53 mins

Dr Hannah Fry and Michael Mosley put the public to the test, pitting young and old, males and females and tech lovers and readers against each other in a battle of wits.

Episode 8

Coronavirus Special - Part 2

Dr Chris van Tulleken, Dr Hannah Fry and Michael Mosley examine the latest research and explore some of the big questions about the new coronavirus and the pandemic it has created.

Episode 9

What's the Matter with Tony Slattery?

59 mins

Actor and comedian Tony Slattery, as he searches for a better understanding of the mental health problems he has had for the past 25 years.

Episode 10

Pluto: Back from the Dead

New discoveries show Pluto to be a world of unimaginable complexity - where some form of alien life might exist. Contrasting with the longstanding previous belief of it being an unremarkable ball of ice on the edge of the solar system.