When did Horizon Season 61 Episode 3 air?
Horizon Season 61 Episode 3 aired on September 29, 2025.
Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 61 · 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, came to exist. With some 100 billion neurons and over 100 trillion connections - more than all the stars in the Milky Way - the human brain is one of nature's greatest achievements. But how did something so incredibly sophisticated evolve from its simple beginnings?
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How long is Horizon Season 61 Episode 3?
This episode runs for approximately 58 minutes.
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