By Greg Braxton

Los Angeles Times

(MCT)

“Under The Dome” and “Extant,” two of CBS’ marquee summer dramas, have been renewed despite less than winning seasons.

“Under The Dome,” based on Stephen King’s novel about a community trapped under a transparent dome that seals it off from the rest of the world, will return for a third season while “Extant,” a futuristic series starring Halle Berry as an astronaut trying to reconnect with her family after spending a year in space, will return for its second season.

Both series are produced by Steven Spielberg’s Amblin Television.

Although “Under The Dome” was a major hit for CBS in its freshman season, ratings noticeably dropped against competition such as ABC’s “The Bachelorette.” Despite the star power of Berry and Spielberg, “Extant” also performed beneath expectations.

The network had already announced another new original drama for next summer — “Zoo,” based on James Patterson’s novel. “Big Brother,” the reality series that sequesters a group of strangers in a custom-built house for three months, has also been renewed for 2015 and 2016.

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