4.1 Episodes during Season 3 and before Season 4 (2007–2008).In 2018 the show's seasonal and episode format became obscured when online content moved from to ‘’. Subsequent seasons contained between nine and ten episodes. Radiolab 's first nine seasons (February 2002–April 2011) comprised five episodes each. The program airs in syndication to over 450 NPR affiliates around the country. In recent years, Radiolab has de-standardized its podcast format, with full-length episodes being compiled almost entirely from previously released podcast shorts. Many of these shorter pieces would later be packaged into full-length episodes not released on the show's podcast feed, but available through Radiolab 's website. For a few years the Radiolab podcast feed featured a full-length, hour-long episode every six weeks (announced by the show's hosts as 'Radiolab: The Podcast'), with two shorter pieces (known as 'shorts') appearing in-between. Radiolab’s broadcast edition airs as an hour-long program each week while the podcast edition releases new episodes of varying lengths on a roughly biweekly schedule.

Hosted by Latif Nasser and Lulu Miller, each episode focuses on a topic of a scientific and philosophical nature, through stories, interviews, and thought experiments.

Radiolab is a radio program broadcast on public radio stations in the United States, and a podcast available internationally, both produced by WNYC. ( Learn how and when to remove this template message) ( April 2022) ( Learn how and when to remove this template message) Please improve this article by removing excessive or inappropriate external links, and converting useful links where appropriate into footnote references. This article's use of external links may not follow Wikipedia's policies or guidelines.

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