Episode guide
Horizon: 2025
4 episodes · premiered Aug 18, 2025
TMDB has no overview for this season.
- Episode 1: Confessions of a Brain Surgeon Aug 18, 2025 · 58m Top brain surgeon Henry Marsh is facing his own life-threatening diagnosis. He reveals the huge risks and emotional impact of a job filled with difficult life-and-death decisions. This…
- Episode 2: Disease X: Hunting the Next Pandemic Sep 22, 2025 · 58m Virologist Dr Chris van Tulleken embarks on a global investigation into the hunt for the pathogen that could trigger the next pandemic and the cutting-edge science developed to tackle it…
- Episode 3: Secrets of The Brain (1) Sep 29, 2025 · 58m Theoretical physicist Professor Jim Al-Khalili goes on a journey through 600 million years of evolution to uncover how the human brain, the most complex structure known in the universe…
- Episode 4: Secrets of the Brain (2) Oct 6, 2025 · 58m Jim watches primates in action to see how they tackle survival challenges, revealing the clever tricks that shaped the brain's thinking. But the real breakthrough came when brains learned…