Clever:
Scientific efforts to shed light on the prehistory of clothes have received an unexpected boost from another line of research, the study of clothing lice, or body lice. These blood-sucking insects make their home mainly on clothes and they evolved from head lice when people began to use clothes on a regular basis. Research teams in Germany and the United States analysed the genomes of head and clothing lice to estimate when the clothing parasites split from the head ones.
How clothing and climate change kickstarted agriculture | Aeon Essays