NASA keeps watch of shrinking Arctic ice

The future of monitoring Arctic ice begins in space.
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NASA scientist Thomas Wagner said to think of the IceSat-2 like a giant laser pointer.
Rather than entertaining your cat, these lasers can measure the height of ice above the water. A total of six of them will be beamed down to Earth.
“The point being that we’re going to get our most accurate maps ever of the thickness of the Arctic sea ice,” Wagner said. “And that’s one of the most important things th