<P> The 100 (pronounced The Hundred) is an American post-apocalyptic science fiction drama television series that premiered on March 19, 2014, on The CW . The series, developed by Jason Rothenberg, is loosely based on the novel series of the same name by Kass Morgan . </P> <P> The series follows a group of post-apocalyptic survivors, chiefly a group of adolescents, including Clarke Griffin (Eliza Taylor), Bellamy Blake (Bob Morley), Octavia Blake (Marie Avgeropoulos), Jasper Jordan (Devon Bostick), Monty Green (Christopher Larkin), Raven Reyes (Lindsey Morgan), Finn Collins (Thomas McDonell), John Murphy (Richard Harmon), and Wells Jaha (Eli Goree). They are among the first people from a space habitat, "The Ark", to return to Earth after a devastating nuclear apocalypse . Other lead characters include Dr. Abby Griffin (Paige Turco), Clarke's mother; Marcus Kane (Henry Ian Cusick), a council member on the Ark; and Thelonious Jaha (Isaiah Washington), the Chancellor of the Ark and Wells's father . </P> <P> In March 2017, The CW renewed the series for a fifth season, which premiered on April 24, 2018 . In May 2018, the series was renewed for a sixth season . </P> <P> The series is set 97 years after a devastating nuclear apocalypse wiped out almost all life on Earth . Over 2,400 survivors live on a single massive station in Earth's orbit called the Ark, built by connecting surviving pre-apocalypse smaller stations and spacecraft . After the Ark's life - support systems are found to be failing, 100 juvenile prisoners are sent to the surface in a last attempt to determine whether Earth is habitable . They discover not all humanity was destroyed and some survived the apocalypse: the Grounders, who live in clans locked in a power struggle; the Reapers, another group of Grounders who have become cannibals; and the Mountain Men, who live in Mount Weather, descended from those who locked themselves away before the apocalypse . Under the leadership of Bellamy and Clarke, the 100 attempt to survive the harsh surface conditions, battle hostile Grounders, and establish communication with the Ark . </P>

How many seasons of the 100 are they
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