On the Headlines Page (The first page when you log in) it lists the 10 most recent events that occured. So player sales, arena expansions etc.
However, sometimes on a busy day, or if you aren't able to log in for a few days, you might miss some of these items. Or you might want to check back up on them.
Perhaps if there was a way that more than 10 items were listed and we could simply scroll down to see the rest?