Scientific American Frontiers
Scientific American Frontiers was a television show about science.  PBS broadcast this show from 1990 to 2005.  The Chedd-Angier Production Company produced this show for Scientific American magazine.  MIT professor Woodie Flowers hosted the first 3 seasons.  Actor Alan Alda hosted seasons 4 thru 15.  So this show was also called "Alan Alda in Scientific American Frontiers".