This week, Michelle McManus and new band Fyr pop in to perform their new singles.
Also, those Cheeky Girls are in to answer uestions, paly Cakey Skate and to take Michael & Stephen's places in Watt Hertz.
This week, the Doctor shows us how vegtable oil floats on the top of water, and how if you put an egg in salty water, it doesn't sink or flot- it stays in the middle.
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Ready to Watch Ministry of Mayhem, Season 1, Episode 8?