My favorite way to watch things is with a skip button. I’m not talking about a rewind or a fast-forward, per se, but about a single push that catapults you backward or forward through a scene. I could ...

A quantum experiment that sees a particle of light travel both forwards and backwards in time, at the same moment, is yet another example of the weirdness of the quantum realm. Although this ...

Dave Richeson at Division By Zero wrote recently about a “proof technique” for proving equalities or inequalities that is far too common: Starting with the equality to be proven and working backwards ...