Michelle Hicks, rollercoaster engineer and founder of Firefly Creations, joins Dan for this week's Science Weekly podcast talking about the science behind rollercoasters!

We catch up with Professor Hallux who's building a human body and today is working on the teeth, whilst a pretty pink mantis is the subject of Dangerous Dan.

In TechnoMum we find out about mechanical engineering and how you could be the next great inventor.

Plus in Science in the News, Dan talks about the first expedition of the RSS David Attenborough, a failed search for a key part of the universe and why Jeff Bezos is planning to create hotels in space!

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