UCL PhD student Helen Greaves is doing a special lunchtime show and tell: she has been invited to select just one object from the Grant's fabulous collection of 68,000 objects to illustrate her talk, which will be explain her work on agricultural ponds - and how their conservation supports some of Britain's rarest animals and plants.
Note: doors open at 1pm for the 30-minute talk, which will start at 1.15pm. If you don't have to rush off, Helen will be available to chat when her talk is finished.