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It's one of the biggest, fastest, and warmest fish in the sea -- and it's also one of the most sought after, and one of the most threatened. In this segment, Ira and guests talk tuna.
Cold-water fish and snow-dwelling insects have evolved antifreeze proteins to avoid icing up. This natural antifreeze also keeps the ice out of some ice creams.
Tiktaalik roseae was a fish that had scales, gills, and limb-like front fins.
Maurizio Porfiri designed a robotic fish that attract real fish. Now he’s trying to understand why.
Two scientists discuss food safety and environmental concerns associated with transgenic salmon.
The nautilus, the “living fossil” of cephalopods, can uncover the origins of the...
Could a stash of ancient bones be the work of a giant cephalopod?
In less than a second, cephalopods can change the color, pattern and shape of th...
Biologist Sarah Zylinski studies how cuttlefish see the world by looking at thei...
\tWith its heavy outer shell, weak vision, and primitive brain, the nautilus lacks much of the excitement of the more flashy and cunning cephalopods. Yet a series of experiments by evolutionary biologists Dr. Jennifer Basil and Robyn Crook involving fish juice, blue lights, and mazes dispels the notion that this ancient species is incapable of basic learning and throws into question the origins of cephalopods' intellectual prowess.