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HAWC experiment in Mexico

WATCHING LIKE A HAWC  The HAWC experiment near Puebla, Mexico, uses more than 300 tanks of water to detect the signatures of gamma rays. Its new observations have reignited a debate about the source of unexplained antimatter particles from space.

prosthetic hand

LIFE AND LIMB  Prostheses have come a long way in 50 years. Some new artificial limbs can restore wearers’ sense of touch or be controlled by wearers’ thoughts.

hippocampal nerve cells

NO NEW NERVE CELLS  A preliminary study suggests that new nerve cells are not produced in adult humans’ hippocampi, results that conflict with earlier data. Hippocampal nerve cell axons are shown in blue, and glial cells are green. All cells’ nuclei are stained red.

simulation of lumpy universe

UNEVEN TERRAIN Universe simulations that consider general relativity (one shown) may shift knowledge of the cosmos.



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