How do you add a new HD channel without adding a new channel? Simple, if you're Cablevision
in New York. Just wait for Discovery to switch Discovery Home Channel to the new eco-focused Planet Green HD
and new channel here we come. Either way, Time Warner customers aren't the only ones having all the green fun (if being a TWC customer can be called fun where you are
) check channel 172 and the video on demand section for all the new programming.