By now everyone knows what happened here in Boston on Monday. Now tonight there's been a shooting on the MIT campus, with the shooter at large. I don't go to school at MIT, but many of my friends do, and some of them are on campus right now under lockdown. A police officer was shot and died at the hospital...

My roommate's SO is one of the people stuck at MIT right now.

And of course, there was the Texas fertilizer factory explosion...

What a sad week.