How to tune in
Tickets for Live Earth U.S.A. at Giants Stadium are $53-$348 available through Ticketmaster, 631-888-9000.
Feeds from all nine concerts will be streaming live Saturday and Sunday at liveearth.msn.com.
The Sundance Channel and Universal HD will cover the concerts live for 22 hours starting at 4 a.m. Saturday.
NBC will air a three-hour prime-time special of live performances, information about environmental and conservation issues, and highlights from the other concerts, hosted by Ann Curry and Carson Daly, starting at 8 p.m. Saturday.
Bravo will air a mix of live and taped performances for 18 hours, starting at 8 a.m. Saturday. Its Web site, bravotv.com, will be live-blogging the event and will offer text-message updates to let fans know when their favorite stars will be on.
CNBC will air a mix of live and taped performances for seven hours starting at 7 p.m. Saturday.
Mun2 will carry a two-hour special focusing on Latin artists' performances starting at 5 p.m. Saturday and Telemundo will air a one-hour wrap-up at 7 p.m. Saturday.
XM Radio will air each city's concert in its entirety, starting with Sydney's concert at 10 p.m. on Friday, on individual channels. The "Live Earth All Access" channel (Ch. 40) will air highlights and interviews from all the concerts starting at 9 p.m. Friday.
And (shameless plug) Rafer Guzman and I will be blogging the event right here starting Friday night.