icecold

Ice-cold electron beams simulated in research at the University of Strathclyde could pave the way to reducing X-ray free-electron lasers (X-FELs) to a fraction of their current size. X-FELs convert the kinetic energy of an electron beam…

The Oakland Athletics fall to the bottom of this week’s MLB Power Rankings. (Photo by Jason Miller/Getty Images)This week’s MLB Power Rankings includes a big jump for the sizzling Atlanta Braves and a drop for the ice-cold Milwaukee…