People flock to zoos to see pandas, lions and monkeys — the ones often referred to as "charismatic megafauna." They also attract a lot of donations. But is there a downside to making some creatures the stars of the animal show?
The coelacanth is a real-life case of the living dead (well, kind of). The massive prehistoric fish was close to being left for extinct — until one was found in 1938. What makes this ancient creature so significant?