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Tail of Two Beetles
Beeties discharging boiling hot chemicals, moths that spiders find hard to swallow, and 'Spanish fly-flavoured ' frogs' legs. are examples described by Professor Thomas Eisner , Cornell University, New York, to illustrate the importance of chemical relationships in the natural world. He tells Geoff Watts how a chemical can become both a repellant and attractor - the yin and yan of chemical ecology.
Producer MICHAEL BRIGHT
(Repeated: Wednesday 9.0 pm)