成人快手

Sir David Attenborough continues his series of letters, recalling his lifetime of experiences and encounters with wildlife.

He recalls his quest for a very special flower - one that blooms for just three days, deep in the rainforest of Sumatra.

Along the way he finds one plant with a stem as wide and tall as a telegraph post, and another with a flower one meter across.

David shares his fascination with these gigantic flora, and ponders the puzzle - why so big?