No one had reported seeing the strange creature — a cross between a bear and a monkey — since before the Great Depression. Then, this past summer, an amateur biologist stumbled upon the presumed-extinct Wondiwoi tree kangaroo while trekking through Papua New Guinea. The revelation underscored how little we still know about the natural world — a major obstacle to conservation.
More affordable and effective conservation of species
No one had reported seeing the strange creature -- a cross between a bear and a monkey -- since before the Great Depression. Then, this past summer, an amateur biologist stumbled upon the presumed-ext..
