ST. PAUL, Minn., Jan. 30 (UPI) -- One of the longest-running searches for extraterrestrial life is coming to end this year as U.S. scientists wrap up a popular program that enlisted millions of home computer users to analyze radio signals received from space. After years poring through immense amounts of generated data, the program's co-founders at the University of California at Berkeley told UPI this week they are probing 100 detected signals deemed to be the best candidates for messages from