Maeklong train trackmarket, Samut Songkhram, Thailand

The Maeklong market in Thailand is built directly over the train tracks. Four times a day the vendors (with a one minute, audible, warning) have to clear their produce away from the train tracks to make way for the train to pass through. Seconds after the train has passed the market goods are set out once again and the tracks are filled with customers.

David Attenburgh and the Lyre bird

The Lyre bird, seen here, in trying to show off to a prospective mate, displays all of the sounds (usually bird sounds) that he has learned to immitate (copy). What unusual sounds has this bird learned to copy? Can you find three of them?