News
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SpaceGravity Probe B finally pays off
A half century in the making, an orbiting experiment finally confirms Einstein's general relativity.
By Devin Powell -
SpaceSigns of dark matter from Minnesota mine
An underground experiment in the U.S. bolsters the case that Earth plows through a halo of dark matter particles.
By Ron Cowen -
Health & MedicineBlame brain cells for lack of focus
Denser tissue in a particular brain region may result in higher distractibility, a new study finds.
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Health & MedicineCoronary bypass rates drop
Heart patients have been less likely to undergo the surgery since 2001, with many getting a less invasive procedure.