'Tiger King' and America's captive tiger problem

Netflix's new docuseries "Tiger King" takes viewers into the strange world of big cat collectors. Featuring eccentric characters with names like Joe Exotic and Bhagavan "Doc" Antle, the series touches on polygamy, addiction ...

Extinct species revival raises hopes, fears

The world's last passenger pigeons perished a century ago. But a Santa Cruz, Calif.-based research project could send them flocking into the skies again, using genetic engineering to restore the once-abundant species and ...

Prawnography shows captive bred prawns lack lust

A Queensland University of Technology researcher has filmed hours of prawn "sex tapes" to find out why prawns bred in captivity did not go on to breed well.