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It's a phrase聽that originated from Darwinian evolutionary theory as a way of describing the mechanism of natural selection. But 'survival of the fittest' might also apply to Charles Darwin's co-discoverer of the theory, the Welsh naturalist Alfred Russel Wallace. Wallace聽thrived in the most difficult conditions in the Amazon and聽South East Asia,聽he survived a shipwreck, fever, poverty and the class-entrenched attitudes of Victorian Britain.

On this week's Science Caf茅, Adam talks to the author and explorer Paul Spencer Sochaczewski, who has written a new book about Monmouthshire-born Wallace and retraced his steps in South East Asia. Paul argues that it was Wallace who properly formulated the theory that natural selection was the mechanism for evolutionary change. Wallace聽was out in聽South East Asia, recovering from a fever,聽when he sent his essay on the subject to Charles Darwin in 1858.

Deservedly, Wallace's聽work and remarkable life has gained more recognition in recent years.聽As the title of the new book suggests, Wallace really did have "An Inordinate Fondness聽For Beetles."聽聽聽聽聽