This Weekend's Show February 14-15

HOUR ONE

• Washington Post Book World editor Rachel Shea talks with Bob about the Post's recent decision to close down the print version of Book World. This weekend will be it's last as a stand alone section in the paper.

• In honor of the 200th birthday of naturalist Charles Darwin, professor of molecular biology and author Sean B. Carroll talks to Bob about his latest book Remarkable Creatures: Epic Adventures in the Search for the Origins of Species. The book recounts the journeys of pioneering naturalists, from Darwin to Charles Walcott.

• The full title of Charles Darwin's most famous book is, On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life. Darwin was raised by abolitionists and it's believed that his hatred of slavery helped shape his theory of evolution. Darwin's Sacred Cause is one of several books being published this month to mark Darwin's bicentennial. Bob speaks with the book's author, science historian James Moore.

HOUR TWO

• Singer-songwriter Graham Nash has released a boxed set for the first time in his career. It features four decades of music from his solo career, his work with The Hollies and with Crosby, Stills and Young. Reflections also feature several previously unissued tracks.

• February 3rd marked Felix Mendelssohn's 200th birthday and Sirius XM classical music host Martin Goldsmith explains why Mendelssohn is a composer worth celebrating.