For his new book, Swiss art critic Hans Ulrich Obrist asked some of the world's greatest creative thinkers to design formulas for the 21st century. The gallery above displays some of their endeavours. We have five copies of the book to give away - to be in with a chance to win, design your own formula and send it to us.
Some entries may be displayed on the website at a later date. Winners will be notified by email address left in the submissions form. Terms and conditions apply