Do faster than light neutrinos let you change the past?

There's been a lot of hubbub about the possibility of FTL neutrinos. But would breaking the light barrier really be such a big deal? Hell, yes, it would! In this week's "Ask a Physicist," we'll find out why. » 10/06/11 9:12am 10/06/11 9:12am

The problem is that for both of these things to be true, measurements of time and spaceā€¦