HumansPlanting Clues review: Intriguing tales about plants’ role in crime From working out a dead person's last meal to the possible poisoning of the Buddha, a new book from David J. Gibson has some great tales about how plants help solve crimes – and are used to commit them Culture
HumansTremors in the Blood review: The intriguing origins of the polygraphAmit Katwala's thorough history of the lie detector test looks at its inventors and some of its earliest cases, placing it, warts and all, in its historical and scientific context Culture