
· Physics
The End of Friction
A Tsinghua team grew single-crystal graphite films that slide with nearly zero friction at the macroscale. Two orders of magnitude past where physics said it should fail.

A Tsinghua team grew single-crystal graphite films that slide with nearly zero friction at the macroscale. Two orders of magnitude past where physics said it should fail.

An MIT researcher proposed using cosmic rays and a shoebox-sized satellite to verify the Outer Space Treaty's nuclear weapons ban for the first time in 58 years.