Steve Caplin, Share Radio's technology editor, looks back over some of the best and weirdest tech from 2021. Listen again to tales of a Tesla hearse, pigs playing computer games, the first-ever Tweet selling for $2.5m, transparent wood, fluorescent potatoes, the Tesla bot (or not), cosmic concrete, latrine-trained cows, Dog TV, a face mask using Ostrich extract to detect Covid and a ribald Polish-singing cactus.
