Manufactured rhino horns are criticized by conservation groups, but some economists think the conversation should stay open.
Read on to learn about strange seashore phenomena, from cannibalistic shark embryos to worms whose butts become autonomous sex machines.
White-tailed deer mothers deposit their babies with female mule deer, which then defend the fawns from predators.
Concerned scientists look for “Harry Potter” effect to explain Indonesia’s new owl trade.
Tube-lipped wrasses overcome coral's defenses with bizarre puckered lips.