Yana, a 130,000-year-old baby mammoth, goes under the scalpelbr br At a laboratory in Russia's far east, scientists carry out a post-mortem -- the body they are dissecting is a baby mammoth who died around 130,000 years ago. Discovered last year, the calf -- nicknamed Yana, for the river basin where she was found -- is in a remarkable state of preservation, giving scientists a glimpse into the past and, potentially, the future as climate change thaws the permafrost in which she was found.