This track was previously named "Hero" (http://en.wikipedia.org/wiki/30_Seconds_To_Mars), that demonstrated the lyrics leaning towards that. Year Zero is exactly what it says -- 0 AD/BC. There is controversy whether this year existed, or if 1BC went to 1AD. Just a bit of snippets to add to the meaning --
This track was previously named "Hero" (http://en.wikipedia.org/wiki/30_Seconds_To_Mars), that demonstrated the lyrics leaning towards that. Year Zero is exactly what it says -- 0 AD/BC. There is controversy whether this year existed, or if 1BC went to 1AD. Just a bit of snippets to add to the meaning --