Last week, an ecologist at the University of Sydney estimated that nearly half a billion animals had been wiped out since Australia's devastating wildfires started spreading in September. Now, he says that number has soared to over 800 million in New South Wales and over 1 billion nationally.
"I think there's nothing quite to compare with the devastation that's going on over such a large area so quickly," University of Sydney professor Chris Dickman told CBS News on Tuesday.

VİDEO: Xinhua