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These resources have been reviewed and selected by STEM Learning’s team of education specialists for factual accuracy and relevance to teaching STEM subjects in UK schools.

Leaded and Unleaded Petrol

This film, from Twig World, looks at the dangers of tetraethyl lead in petrol.

The key points made in the film are:

•Lead was added to fuel to make it better for our engines.
•However, lead is a dangerous pollutant.
•It is toxic and damages our inner organs. Leaded fuel caused a health scare.
•Leaded fuel has been banned and replaced with unleaded.

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