"Survivalism" (also known as Halo 23) is the first single by Nine Inch Nails from their 2007 album Year Zero.
FMQB Has reported that Survivalism will arrive at radio on February 27 with an add date of March 6. source: http://www.fmqb.com/Article.asp?id=350363
On February 16, nin.com confirmed that Survivalism will be released as a single in Europe on March 5.