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fracked well

PUMP DOWN  Hydraulic fracturing operations pump a mix of water, sand and other materials into the ground to ease the retrieval of oil and gas from the rock layers. New research is looking into the link between fracking and earthquakes.  

worker honeybee

BEE COLD CASE  Just what caused sudden disappearances of honeybees (a worker bee shown) about a decade ago is still a matter of scientific debate.

illustration of SEXTANT

SPACE PLACE  NASA’s SEXTANT experiment demonstrated a stellar version of GPS, finding the experiment’s location with an apparatus consisting of 52 X-ray telescopes (illustrated) on the International Space Station.

illustration of 2-D honeycomb

ULTRATHIN FILMS  Computer simulations reveal the properties of a little-studied group of synthetic materials: 2-D arrays of metal atoms arranged in honeycombs (illustrated), triangles or squares.



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