A spokeswoman for KCET-Los Angeles says Howser died Sunday night of natural causes.
The Tennessee native moved to Los Angeles in 1981 and worked as a reported for KCBS-TV. After briefly serving as a weekend host for "Entertainment Tonight" in the 1980s, he joined KCET as the host of "California's Gold." Howser's "California's Gold" took viewers to many parts of the Golden State, delivering insights on its history and natural wonders in a Tennessee twang.
"KCET regrets to inform you that Huell Howser passed away last night," KCET said in a statement. "We are saddened by the loss. KCET.org will be launching a page later today where Huell fans can share their favorite memories of him."
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KABC-TV and the Associated Press contributed to this story.