A little help, please?

[fantastic_jackie]

Can someone please go to this --> http://unscdf.planethalo.gamespy.com/?Humanity:History <-- website for me and tell me what happened directly before and after the year 2524? Book wise, event wise, game wise - whichever! I just bought the new Halo book, (Harvest Contact by Joseph Staten - and holy crap, is this guy lucky!! His first novel ever is under the Halo franchise!!) and I'm almost positive I know what's happening at this time period, but I can't open any links to any of the Halo timelines because they're all blocked here at work! 

I needa know! I'm reading between calls! ;_; Help? Pleases?