Sublimation and the Sublime

How much dry ice would it take (once sublimed) to suffocate a living being in a close room? There's a little heap of it entering the gaseous phase in the lab sink, and it happened to engender such a morbid question - forgive me.

I recently got my fall class schedule (here at vet school, class schedules are planned for us the first ~3 years). We have Monday and Wednesday afternoons off, and no classes on Friday - it's just a little weird. It might suggest a lot of self-teaching. I think perhaps I should be reading medicine and anesthesia texts and volunteering at a vet clinic this summer to be prepared for classes. I am excited for this coming year - it holds the potential for some intense learning and integration of concepts, and I think it will be good.