Here's what I've got:
April 3: Laughter
April 10: Why We Experience Life
April 17 (Day before my Birthday): Childhood Hero
April 24: Stonehenge
As of now, things are liable to change, but I'm pretty sure I'm going to keep the list the way it is.
Of course, I will be posting little entries around the rest of the week, but these are the big ones.