we've got conrad anker, cedar wright, alex honnold, and julie chen. different heights. >> scaling metaphor. "usa today" reports uber is enlisting its drivers in a fight against sex trafficking. a new initiative starts today. it involves all u.s. drivers. they'll get tips on spotting those involved in trafficking. >>> facebook reveals its privacy principles for the first time and will roll out users to track information. users wi be shown how to manage the data that facebook uses to show them ads. they'll also learn how to remove old posts and what happens to the data when they delight their account. this comes ahead of new european union data laws that take effect in may. >>> the "sydney morning herald" said roger federer defeated marin cilic to earn his 20th grand slam title. he did defeat him. federer topped his own record for the most grand slam tournament wins by a male player. >> winning just an absolute dream come true. the fairytale continues for us for me and after the great year i had last year, it's incredible. >> it is incredible. at 36, fe