The Cambridge Science Festival is expecting thousands of visitors on its closing weekend.
The festival started on March 10 and finishes on Sunday (March 23).
On its opening weekend more than 20,000 visitors attended events in the city.
Events on Saturday include Amazing Animals at the Cambridge Science Centre and Laser Bunny Hop at the Institute for Manufacturing.
Event on Sunday include Anitbody Angling at the Clinical School and the Plant Pattern Hunt at the Botanic Garden.
For a full programme of events visit the Cambridge Science Festival website.