1. Local Food

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. 1 May 2017. 12 min

Stefan visits an organic farm in Devon to uncover how ordering events, patterns and measuring can help work out what's good for the environment.

2. Recycling

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. 7 May 2018. 10 min

Stefan visits a vast recycling plant to explore how 2-D and 3-D shapes are used to sort and reuse rubbish, and visits a school that uses recycled objects in many different ways.

3. Saving Energy

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. 1 November 2016. 10 min

Stefan vists a brand new hospital in London where he learns about measuring and controlling temperature and visits a school that uses data collection to run an energy saving campaign.

4. Rainwater Harvesting

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. 7 November 2016. 10 min

Stefan visit a huge hi-tech greenhouse in Kent to learn how much rain can be collected from a roof using ideas of conservation of volume and calculating area.

5. Reducing Car Use

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. 27 November 2017. 10 min

Stefan explores alternatives to car use by pedaling a rickshaw across Bristol and constructs simple equations to calculate the carbon cost of a new cycle way.

6. Reducing Food Waste

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. 27 November 2017. 10 min

In this episode targeted at the Primary maths curriculum Stefan visits a unique grocery in Manchester and learns how to reduce food waste by turning facts and figures into fractions and percentages.

7. Wood Fuel

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. 4 December 2017. 10 min

In this episode, Stefan heads into the woods of Sussex to explore sustainable energy and meets a group of students who use algebra to compare different types of energy.