Scientists have used new imaging techniques to reveal intricate tattoos on a Siberian ice mummy, with reports varying on the mummy's age as either 2,000 or 2,500 years old. The discovery is shedding light on the history of ancient art and the world's oldest tattoos. The findings are part of ongoing research into ancient human remains, although it appears unrelated to other discoveries, such as those involving a macaw mummy or otzi the iceman.