Until 10 Dec James Turrell
An exhibition of new installations, light works, sculptures and prints by James Turrell, exploring light's ability to alter consciousness.
10am-6pm Tue-Sat. Gagosian Gallery, London WC1X 9JD. Free.

Until 24 Dec Exhibition #3
Exhibition of the circus curios and fairground ephemera accumulated over a lifetime by pop artist Sir Peter Blake, including taxidermy dioramas by Victorian genius Walter Potter.
10.30am-6.30pm Wed-Sun. Museum of Everything, London NW1 8YL. Free.

2 Dec Cane Toads: An Unnatural History
A screening of a short film shot in the Australian outback in the 1980s, in which a cast of small-town eccentrics talk about the impact of the huge, out of control cane toad, originally introduced to eradicate pests from sugarcane crops.