lasers stories

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In order to send a spacecraft to another star in an amount of time that would strike the average person as reasonable — like a generation — we're going to need new ways of propelling the aforementioned spacecraft that would strike the average person as nuts, like using solar-powered lasers to coax antimatter fuel out of the quantum vacuum of space.
There's absolutely no reason to do something peacefully and by hand when you could do it violently, with lasers, instead. Germany agrees, and scientists there are developing a system that replaces the task of pulling weeds with a system of plant-pulverizing semi-autonomous laser cannons.
Ionization is when an an atom loses or gains an electron. This happens to lots of atoms, but it happens so fast that nobody has ever caught ionization in the act. Now, scientists at the Vienna University of Technology have used an attosecond laser pulse to watch as a single electron packs its bags and takes off on its own.