Will insects inherit the earth?

The 'Will insects inherit the earth?' episode of 'The Infinite Monkey Cage' begins with a humorous introduction, setting the tone for a show that balances scientific discussion with wit. Hosts Robin Ince and Brian Cox introduce the topic of insects, the most numerous and diverse group of animals on the planet, questioning their evolutionary success and potential to 'take over the world.' The panel consists of entomologists Tim Cockerill and Amoret Whitaker, along with comedian Dave Gorman, who provides a layperson’s perspective.

Tim Cockerill defines insects as arthropods with a three-part body structure, six legs, and typically two pairs of wings, clarifying common misconceptions about spiders and other non-insect arthropods. He discusses the evolution of insects, suggesting they may have originated from a land-dwelling crustacean-like ancestor, and have since been present through significant evolutionary events, including the rise of flowering plants and the reign of dinosaurs.

Amoret Whitaker brings the conversation to forensic entomology, explaining how insects, particularly blowflies, play a role in decomposing bodies, which can be used to estimate time of death in forensic cases. She shares a fascinating case where the presence of fleas helped solve a murder. The discussion touches on the extraordinary life cycles of insects, including complete metamorphosis, which has contributed to their evolutionary success.

Dave Gorman offers comic relief and skepticism throughout the episode, challenging the idea that sheer numbers equate to success and expressing a common aversion to insects. The conversation steers towards the ecological significance and intelligence of insects, with bees' waggle dance as an example of complex communication.

The episode concludes with a discussion on the sustainability of insects as a food source. Tim Cockerill presents edible insects to the hosts and audience, explaining their efficiency in converting food to protein and their potential role in addressing future food shortages. The hosts and guests sample various prepared insects, reacting with a mix of intrigue and humor.