Leaded and Unleaded Petrol

The video discusses the history of petrol use in cars, starting with its extraction from crude oil and its role in powering early engines. Thomas Midgley Jr.'s discovery of a lead compound improved engine efficiency but led to widespread use of leaded petrol, which posed significant health risks. By the 1980s, leaded petrol was phased out due to these concerns. The development of unleaded petrol and catalytic converters marked a shift towards safer alternatives. Today, efforts continue to create cleaner fuel technologies to reduce environmental and health impacts.

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