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Series 1: Episode 1
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. \n\nWith 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?
Source: BBC 2
Most recent episodes of Secrets of the Brain
Secrets Of The Brain
Series 1: Episode 2
Physicist Jim Al-Khalili is on a mission to crack the 600-million-year mystery of how the human brain evolved.\n\nJim watches primates in action to see how they tackle survival ...
16-10-2025
BBC 2
Secrets Of The Brain
Series 1: Episode 1
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 u ...
07-10-2025
BBC 2
Most popular episodes of Secrets of the Brain
Secrets Of The Brain
Series 1: Episode 1
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 u ...
07-10-2025
BBC 2
Secrets Of The Brain
Series 1: Episode 2
Physicist Jim Al-Khalili is on a mission to crack the 600-million-year mystery of how the human brain evolved.\n\nJim watches primates in action to see how they tackle survival ...
16-10-2025
BBC 2