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Physicists Finally Nail the Proton’s Size, and Hope Dies
A new measurement appears to have eliminated an anomaly that had captivated physicists for nearly a decade.
Strange Metal-like Bonds Discovered in Customized Crystals
While studying materials made from DNA-coated nanoparticles, researchers found a new form of this matter: lattices in which smaller particles roam like electrons in metallic bonds.
Ann Nelson Took On the Biggest Problems in Physics
The theoretical particle physicist Ann Nelson, who died on August 4 at age 61, was a font of brilliant ideas and a champion of ending discrimination in the field.
Cosmologists Debate How Fast the Universe Is Expanding
New measurements could upend the standard theory of the cosmos that has reigned since the discovery of dark energy 21 years ago.
A Call for Courage as Physicists Confront Collider Dilemma
Carlo Rubbia, leader of the bold collider experiment that in 1983 discovered the W and Z bosons, thinks particle physicists should now smash muons together in an innovative “Higgs factory.”