Insects are the most abundant and enduring multi-cellular life form ever to have evolved. They are fast breeding, highly evolvable and, thanks to their body-plan, are future-proofed like no other animal. There are 40 tonnes of insects for every human being alive and they account for well over half of all known species. They are an essential component of global food chains and without them as pollinators, predators and recyclers, the world would be a very different place.

As model organisms in research, insects have greatly helped our understanding of genetics, physiology and behaviour. But they have a dark side - they have changed the short course of human history by killing hundreds of millions of people and destroying their crops.

The transcript and downloadable versions of the lecture are available from the Gresham College website: http://www.gresham.ac.uk/lectures-and-events/bug-world-sex-violence-and-a-cast-of-billions

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 1,900 lectures free to access or download from the website.

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