The nerves that activate a squid's jet-propelled escape mechanism have particularly big axons, allowing signals to travel at great speed.

ECONOMIST: Andrew Huxley | The

He is looking over his shoulder at where he has been while the jet-propelled vehicle he is riding takes him forward, right over a cliff.

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The apparatus he used, known as the Jetlev R200, is a water-propelled jet pack that can shoot a person 30 feet into the air and run for some 4 hours.

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