Wrote a letter to Michio Kaku once, about the possibility of knowing if any red giants could be Dyson Spheres; he believed that it would be difficult to tell whether a star was one or not.
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.
