The 2mm water boatman insect is the loudest creature on Earth in relation to its size, according to scientists in Scotland and France.

In addition, the feat is achieved through the frantic rubbing of its, ahem, penis.

The insect can...

Along with "how do bees fly?" and "why is Jeremy Kyle still on telly?", "what came first, the chicken or the egg?" is one of the major mysteries in the world today. Or, at least, it was.

Boffins at Sheffield University believe that they've...