The Great Soul of Siberia

Sooyong Park spends years in the wilderness to monitor and track the last remaining Siberian tigers. He spends weeks in the middle of a freezing winter in a dug-out shelter to photograph these magnificent animals in their ever-diminishing wilderness. But neither the freezing weather nor climate change is the immediate problem for the tigers - poaching and human encroachment are destroying the habitat they need to live in to prevent interbreeding.  You could cry reading this book.