Summary: Alice Bell quizzes water systems engineer Sarah Bell (no relation) on water, sewers and the kite marks for fake stools, with host Martin Zaltz Austwick. (Image: Crossness Pumping Station, CC BY-SA 2.0 by Steve Cadman)
Summary: Alice Bell quizzes water systems engineer Sarah Bell (no relation) on water, sewers and the kite marks for fake stools, with host Martin Zaltz Austwick. (Image: Crossness Pumping Station, CC BY-SA 2.0 by Steve Cadman)