Some 375 million years ago, Tiktaalik emerged onto land. Today, explains paleontologist Neil Shubin, we're all walking around in modified fish bodies.
Tiktaalik roseae, a transitional fossil showing the link between fish...and us. Courtesy of Tangled Bank Studios, LLC.
We all know the Darwin fish, the car-bumper send-up of the Christian "ichthys" symbol, or Jesus fish. Unlike the Christian s