Midge haters, look away now. Rothamsted's Café Scientifique returns to the Harpenden Arms with a talk in praise of chironomids, the non-biting midges that thrive in ponds, lakes and rivers.
Steve Brooks, whose research includes work at the Natural History Museum, explains how midges make a "midge thermometer" for reconstructing past climates and testing climate models, and what they've revealed about bird populations and heavy metal pollution.
Free to attend, with no booking needed: turn up and follow the signs. Details on Rothamsted's events page.