YAKUTSK, Russia – Russian scientist Semyon Grigoriev, acting director of the Sakha Republic’s mammoth museum, shows a cross-section surface of a mammoth’s thighbone at the museum in Russia on Nov. 17, 2011. Scientists from Japan and Russia say finding the bone filled with such well-preserved bone marrow in permafrost soil in Siberia increases the chance of cloning the extinct animal. (Kyodo)