Heard the one about the world's funniest joke? Scientists who have spent the last four months sifting through 10,000 gags and the votes of 100,000 people from 70 countries will soon know the side ...

Heard the one about the scientist trying to find the world's funniest joke? He's deadly serious - and psychologist Dr Richard Wiseman will spend the next year collecting thousands of gags in an ...

Funny or not, Oklahoma has seen its fair share of decent jabs. Here are some April Fool's Day pranks from Oklahoma history.