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Bruno Mars, Robin Williams and Nicole Kidman to appear in latest series.
The popular children's programme will be airing it's 42nd season in September and celebrities are being drafted in to help bring across a message.
Bruno, Robin and Nicole will be concentrating on science, maths and engineering with age-appropriate experiments set to take place to help the kids learn the fundamentals, with a fun twist.
It's not the first time the children's TV show has used celebrities, from Cher to Ricky Gervais and Jessica Alba to Michael Jackson, there have been a whole host of high profile appearances...