Catch up TV
What Makes Us Clever? A Horizon Guide to Intelligence
Dallas Campbell delves into the Horizon archive to discover how our understanding of intelligence has transformed over the last century. From early caveman thinkers to computers doing the thinking for us, he discovers the best ways of testing how clever we are - and enhancing it.
Source: BBC 2
Most recent episodes of Horizon
Horizon
The Great British Drought
Documentary from 1976 that explores the drought crisis of that year, going behind the scenes to discover its impact on farming, the landscape and industrial and domestic consumers.
13-06-2026
BBC 2
Horizon
2020: Pluto: Back From The Dead
The incredible story of how Pluto has been propelled from an unremarkable ball of ice on the edge of the solar system to a world of unimaginable complexity - where some form of ...
13-04-2026
BBC 2
Horizon
1997-1998: Mir Mortals
First transmitted in 1998, this is the story of four men who orbited Earth on board the ill-fated Mir space station, which NASA declared unsafe in 1991. Although Mir had been li ...
10-02-2026
BBC 2
Horizon
2022: How To Sleep Well With Michael Mosley
A third of the population regularly struggle with our sleep, which rose to one in two during the pandemic - the highest it’s ever been. However, as more and more people se ...
07-01-2026
BBC 2
Most popular episodes of Horizon
Horizon
2018: 4. Spina Bifida & Me
One in every 1,000 pregnancies in Britain has a spine or brain defect like spina bifida. Thirty years ago, actress Ruth Madeley was one of them. Despite having spina bifida hers ...
26-07-2018
BBC 2
Horizon
The Great British Drought
Documentary from 1976 that explores the drought crisis of that year, going behind the scenes to discover its impact on farming, the landscape and industrial and domestic consumers.
13-06-2026
BBC 2
Horizon
2014-2015 - Is Your Brain Male Or Female?
Series exploring topical scientific issues. Dr Michael Mosley and Professor Alice Roberts investigate if male and female brains really are wired differently.
04-05-2021
BBC 2
Horizon
2018: 11. Vitamin Pills: Miracle Or Myth?
Nearly half of us take a vitamin or mineral supplement every day, but what are these pills sold on every high street actually doing? Digging deeper than the eye-catching words o ...
10-04-2023
BBC 2