BIRDS & DINOSAURS - Scientists discover T. Rex's feathered cousin, did dino gas warm the ancient earth? And giant fleas that may have pestered the prehistoric giants. Also: why the amorous pursuits of an Australian bird has turned it into a horticulturalist, and how ravens keep track of friend and foe.
EVOLUTION & EXTINCTION - What really happened to Australia's missing megafauna, how carnivores lost their sweet tooth, why lovelorn fruit flies resort to alcohol, strategic miscarriages in monkeys, and a new frog species is discovered in plain sight.
EVOLUTION - Did a giant beaver that once roamed North America communicate by whistling? A newly discovered mammalian fossil that sported fangs. And, did the advent of cooking drive human evolution? Also: new research suggests that Neanderthals' shorter legs were actually an advantage for navigating mountainous terrain.
MARVELS OF EVOLUTION - A prehistoric pregnancy clears up a Mesozoic mystery. The economics of plant-fungi cooperation. How to get six butterflies in one. Counting up the species on earth. And how your stress could be bad news for your mate if you're a finch.
What reindeer can see that we can't. How some blind people are using echolocation to navigate the world. And, how the retinas of deaf people change their experience of the world. Also: better noses spelled bigger brains for ancient mammals, and: what the teeth of Neanderthals tell us about their hands.
Cultural revolutions in humpback whale songs, a barcode scanner for zebra stripes, a prehistoric toothache, and changing skull sizes in the Iberian Peninsula.