Glowing Green Guts

To untangle the links between guts and brains, some scientists are starting small: with the tiny transparent worm C. Elegans, whose guts glow green and neurons glow orange in this composite illustration and microscope image.

Breakneck Bite

The jaws of trap-jaw ants can generate forces hundreds of times their body weight and snap shut at speeds reaching 145 miles per hour -- over 2,000 times faster than the blink of an eye.


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