Russian scientists could be risking another pandemic as they work to unearth ancient viruses at a lab in Siberia, experts have warned.
Teams at a former bioweapons lab in the Siberian city of Novosibirsk are seeking to revive viruses that have been laying dormant for almost half a million years.
Scientists at Vector State Research Centre of Virology have been examining the preserved carcasses of ice age creatures such as mammoths and wooly rhinoceroses, with the aim of extracting and studying the infections that caused their deaths.
