Joe Palca is an American correspondant for National Public Radio. He specializes in science, and is the backup host for Talk of the Nation Science Friday. Wikipedia*
On the C-SPAN Networks:
Joe Palca has three videos in the C-SPAN Video Library; the first appearance was a 2012 Forum. The year with the highest average number of views per program was 2014 with an average of 1,115 views per program.