Following the Beagle voyage, Darwin settled down to a quiet married life, relying on correspondence to gather facts.

He wrote thousands of letters as he gathered facts to support his still-secret theory.

Long before anyone had heard of evolution, Darwin produced four enormous books on barnacles, which helped establish his credentials (even his most committed opponents acknowledged that he couldn't be ignored). And the books were also Darwin's attempts to answer some complex questions about sex that will recur throughout the lectures.

A lecture by Jim Endersby 5 October

The transcript and downloadable versions of the lecture are available from the Gresham College website:
https://www.gresham.ac.uk/lectures-and-events/darwin-barnacles

Gresham College has been giving free public lectures since 1597. This tradition continues today with all of our five or so public lectures a week being made available for free download from our website. There are currently over 2,000 lectures free to access or download from the website.

Website: http://www.gresham.ac.uk
Twitter: http://twitter.com/GreshamCollege
Facebook: https://www.facebook.com/greshamcollege
Instagram: http://www.instagram.com/greshamcollege

A lecture by Joanna Bourke 8 October

The transcript and downloadable versions of the lecture are available from the Gresham College website:
https://www.gresham.ac.uk/lectures-and-events/evil-eve

Gresham College has been giving free public lectures since 1597. This tradition continues today with all of our five or so public lectures a week being made available for free download from our website. There are currently over 2,000 lectures free to access or download from the website.

Website: http://www.gresham.ac.uk
Twitter: http://twitter.com/GreshamCollege
Facebook: https://www.facebook.com/greshamcollege
Instagram: http://www.instagram.com/greshamcollege

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