Emperor penguins' amazing journey to breeding grounds deep in the Antarctic and their ability to survive the brutal winter there were captured in the 2005 documentary March of the penguins.
Estimates are that these two server rooms can heat 500 homes for a year, even in Finland's brutal winters.
To survive brutal winters, inhabitants of Siberia and the Russian Far East as recently as the late 19th century raided food stores-of rodents.
