Biologist Graham Slater explains that the evolution of whales into behemoths of the sea occurred in evolutionary spurts and not in a slow and steady process.
Municipal waste — from poop to heat — can be a valuable resource that could run our cities more cheaply and sustainably, says a hands-on Canadian ecologist.
Deep-sea researcher Craig McClain tells Curiouser & Curiouser about the bounty of life he's found in one of the least inviting places on earth -- the bottom of the ocean.