collections "They will be treasured": Unusual paper clip collection finds new guardians Mark Frauenfelder
art What do you get when you combine the ticking hand of a clock with a mousetrap? Watch and find out Popkin
art These kinetic sculptures feature mundane, sad, beautiful, and desperate human movements on endless loop Jennifer Sandlin
Scientists use vibration detection to eavesdrop on smartphone conversations from up to 10 feet Ellsworth Toohey
classical music How Houston Symphony's percussionist built the 22-pound hammer that delivers Mahler's "blows of fate" in Symphony No. 6 Ellsworth Toohey
art Artist Doug Geiger creates beautiful engravings using the "banana scrimshaw" technique Jennifer Sandlin
photos The secret world of Victorian microphotography: shrinking images to the size of a pencil tip Popkin