One New Thing Per Day(?)

I would like to learn one new random thing each day.  They have those tear-away desk calendars but what I really want is a daily email that teaches me one thing I (likely) didn't know the day before.  Anyone know if such a service exists?  If not, anyone interested in building one of these?  I wouldn't mind collaborating on this.

This reminds me of an old idea a friend and I started on called "Lore of Nations"...  Won't mean anything to anyone but him and I, so you know how far this idea went.