Discovering milestones (all ages)

I have yet to see a "death of a friend" type of milestone. Expected to see one after a child froze to death in the pool while trying to get to where the other sims were in the house... All I did was click ok on that, didnt know the sim would decide "hey, lets go via the pool to my friend...." WHILE it was blizzard conditions mind you....

Havent seen any indication of one so far though...