SUNDAY, APRIL 20

[EDITOR'S NOTE: Audio descriptions (AD) for tonight's episodes of BOB'S BURGERS, AMERICAN DAD, THE SIMPSONS, FAMILY GUY and COSMOS: A SPACETIME ODYSSEY are available on the SAP Audio Channel.]

--"COSMOS: A SPACETIME ODYSSEY"-- (9:00-10:00 PM ET/PT) CC-AD-HDTV 720p-Dolby Digital 5.1

ONE MAN'S HEROIC DISCOVERY CHANGES THE WORLD ON AN ALL-NEW "COSMOS: A SPACETIME ODYSSEY" SUNDAY, APRIL 20, ON FOX

Richard Gere ("Arbitrage," "Nights in Rodanthe") Guest-Voices

To determine the true age of the Earth, geochemist Clair Patterson (guest voice Richard Gere) developed the uranium-lead dating method to make an unprecedented discovery - calculating Earth's age of 4.5 billion years. But Patterson's groundbreaking discoveries were just beginning. Patterson made it his mission to draw public attention to the detrimental effects of lead in the environment and dedicated his career to fighting against the petroleum and chemical industry, eventually achieving public health's biggest victory of the 20th century in the all-new "The Clean Room" episode of COSMOS: A SPACETIME ODYSSEY airing Sunday, April 20 (9:00-10:00 PM ET/PT) on FOX and Monday, April 21 (9:00-10:00 PM ET/PT) on Nat Geo. (C-107) (TV-PG D, L, V)

Host: Neil deGrasse Tyson

Guest Voice Cast: Richard Gere as Clair Patterson