Facial reconstruction of a seaman between seventeen and twenty-four years of age, the younger of two crewmen whose skeletal remains were recovered from the USS Monitor.
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.