UK-based Celsius Entertainment has come on board for international sales of the film adaptation of bestseller Freakonomics.

The film will be comprised of six segments, each directed by documentary hotshots Morgan Spurlock, Alex Gibney, Rachel Grady & Heidi Ewing, Eugene Jarecki & Jehane Noujaim, and Laura Poitras. Another director will be confirmed soon.

Each filmmaker will tackle one of the questions posed in the book, in which Steven Levitt and Stephen Dubner revealed economic theories in relation to contemporary culture. The book has sold more than 4 million copies in 30 languages since 2005.

Topics in the book include the business of crack cocaine sales, how one's name determines future wealth and the possible link between sumo wrestlers and dishonest teachers.

Chad Troutwine and Seth Gordon are producing.

The film project will start shooting from mid-March with Grady & Ewing's part. The entire film is expected to be finished by January 2009.

'I am looking forward to working with Chad, Seth and some of the world's very best documentary filmmakers on the filmed version of a book I have long been a big fan of,' said Celsius managing director Thierry Wase-Bailey.

Producer Troutwine added: 'A stellar team of top documentary filmmakers will tackle one of the most controversial and highly regarded non-fiction books of the last decade. Steven Dubner and Steven Levitt have taken economics to places it has never been before and the combination of their findings and such top filmmaking talent should prove to be incendiary.'