Remains from the Zhokhov island in the East Siberian Arctic show trained sled dogs existed almost 10,000 years ago.
Dozens of volunteers join search to find his loveable, trusting German Shepherd kidnapped by dog-snatchers.
Only 7 dogs remain: is it enough to save the species?
Yan - 'the only friend in my life' - was stolen in February, prompting extraordinary search by Vladimir Davydov, 77.
Lab-made dog was created from tiny fragment of its mom's ear by the South Korean team working at bringing back the woolly mammoth.
Valuable obsidian travelled during Early Holocene times from Lake Krasnoe in Chukotka to Zhokhov Island deep in the Arctic.
The 19th century vessel - formerly the Royal Navy's HMS Pandora - sank as Americans raced to be first to North Pole.