If evolution is a faith, London's Natural History Museum is its cathedral and Charles Darwin its patron saint. And just as the great Christian churches could, in their pomp, summon Leonardo or Raphael to embellish them, so the NHM can call on today's art-world elite for its decorative needs. Among the 10 artists it has approached to create a new ceiling for one of its galleries are Turner Prize-winners Rachel Whiteread and Mark Wallinger, and the venerable sculptor Richard Wentworth. Their proposals are on show in a small but provocative exhibition that should give heart to anyone who thinks that art and science ought to have more to do with each other.

The theological comparison may be unfair, of course - high-priest Richard Dawkins will fume that evolution, being empirically test-able, is at least not a blind faith - but it's hard to avoid. After all, the NHM itself, completed in 1881 by Alfred Waterhouse, deliberately mimics the medieval Romanesque style, though its ornament comprises plants and animals, not saints and angels. More immediately, in several of the artists' proposals there are ideas and images that evoke religion.