David Baron, former NPR environment correspondent and science reporter for WBUR in Boston, has written a new book. American Eclipse focuses on the total solar eclipse of 1878 and how it impacted America. Baron has traveled around the world to witness five total solar eclipses. He’ll speak tonight at 7 at the Library Center. KSMU’s Michele Skalicky sat down with Baron to talk about his new book and about the August 21 total solar eclipse that will cross the United States from Oregon to South Carolina.