
RoboRoaches and fish that glow —
Advances in biotechnology allow scientists to modify animals in ways that nature did not intend. GloFish carry a fluorescence gene that makes them "glow" under a black light in a darkened room.

Mr. Green Genes —
The genetically modified Mr. Green Genes looks like an everyday kitten when the lights are on ...

Mr. Green Genes —
... But when the lights are out, the cat glows under an ultraviolet light thanks to a fluorescence gene in his cells.

Winter the dolphin —
Atlantic bottlenose dolphin Winter, whose story inspired the movie "Dolphin Tale," swims with a prosthetic tail after her real one was lost in an accident.

RoboRoach —
This RoboRoach has been wired with circuitry that allows a handler to move it by remote control.

Author Emily Anthes —
"Frankenstein's Cat" author Emily Anthes with her dog, Milo. "Our scientific tools are new, but the ethical questions they raise are not," she says.


