An American anthropologist set out to study the Tiv of West Africa and was taught the true meaning of Hamlet.
With proper safeguards, water currents can be harnessed out of sight.
Barely pulled back from the brink of extinction, California condors are still being poisoned by lead-based ammunition.
Vulnerable everywhere in the wild, lions already face regional extinction.
Reef-building sponges are giving up their long-held secrets.