David At­ten­bor­ough’s Liv­ing Lights

The Irish Mail on Sunday - TV Week - - 15 JUNE THURSDAY -

The nat­u­ral­ist (left) uses a rod to ‘fish for fire­flies’ in one of his most mag­i­cal films. Why do some crea­tures light up? Among fire­flies, the lu­mi­nes­cence is mo­ti­vated by mat­ing – the fe­male judges the male’s genes by the pre­ci­sion of his tim­ing.

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