Matter & Energy

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person falling through tunnel

TUNNEL VISION  Jumping into a hypothetical tunnel though the center of the Earth could transport you to the other side — but friction would stand in your way, scientists report.

balloons

HEFTY HELIUM  A reservoir of more than a trillion liters of helium gas are stashed away beneath Tanzania, enough to fulfill global helium demand for everything from party balloons to MRI machines for years.

Shark snout

IT’S ELECTRIC  A shark’s snout contains tiny pores, known as ampullae of Lorenzini, which can sense weak electric fields from prey. New research indicates that a jelly inside the pores is a highly efficient proton conductor.

Matter & Energy

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