Jim Harbaugh Introduced as Michigan Head Coach, Calls It a 'Homecoming;' United and Orbitz Sue to Stop 'Hidden City' Ticketing Website Launched by 22-Year-Old ; Week Ahead: Cold Air Is Here for the Next Few Days, Teens on NYE Then 20s Thursday 30s Back Fri/Sat but Cold Again Sunday • TUE DEC 30, 2014 12:38 PM CT

Jim Harbaugh introduced as Michigan head coach, calls it a 'homecoming.' http://t.co/QPuSMR03xW pic.twitter.com/yNMYNkxX9g

— Chicago Tribune (@chicagotribune) December 30, 2014

United and Orbitz sue to stop 'hidden city' ticketing website launched by 22-year-old http://t.co/pkDPw2x5Z3 pic.twitter.com/NMfNahKlff

— ABC 7 Chicago (@ABC7Chicago) December 30, 2014

WEEK AHEAD: Cold air is here for the next few days. Teens on NYE then 20s Thurs. 30s back Fri/Sat but Cold again Sun pic.twitter.com/HV2vcfbydi

— NBC's Storm Team 5 (@NBCStormTeam5) December 30, 2014