It is only human arrogance that denies the possibility of extra terrestrial life. Are we so vain to believe that out of all the possible thousands of planets, only ours supports life? Does it have to be life as we currently understand it?
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.