LONDON, ENGLAND - MAY 19: (EDITORS NOTE:  IMAGES EMBARGOED FOR USE UNTIL 00:01 BST ON TUESDAY MAY 20, 2014)  Lyuba, the world's most complete mammoth, is examined by research leader Adrian Lister upon arriving at Natural History Museum on May 19, 2014 in London, England.  The baby mammoth, measuring 85 centimetres tall and 130 centimetres long, was discovered in Siberia, Russia in May 2007 by reindeer herder Yuri Khudi and his sons whilst searching for wood along the Yuribei River some 42,000 years after the one month old mammoth died.  Lyuba, named after Yuri's wife and meaning love in Russia, is on public display at the Natural History Museum from 23 May until 7 September 2014.  (Photo by Rob Stothard/Getty Images)