1. Mgr. Petra Soukupová

2. 1. Warm-up: Brainstorming 2. Photo 3. Post-reading Questions 4. Resources 5. Key

3. Science

5. * Why was leaded petrol called ‘Ethyl’? * How and why was it used? * What effects did Ethyl have on the factory workers and the inventor himself? * Where was Freon used and why? * What killed the inventor? * Why does the writer suggest that it might have been better for the environment if the inventor had chosen a different job? * Are both leaded petrol and Freon used nowadays?

6. Adapted and photo taken from: Thomas Midgley, Jr. In: Wikipedia: the free encyclopedia [online]. San Francisco (CA): Wikimedia Foundation, 2001- [cit. 2012-11-05]. Dostupné z: http://en.wikipedia.org/wiki/Thomas_Midgley,_Jr.

7. 1. Warm-up: Students' own answers. 2. Thomas Midgley, Jr., an American engineer and scientist; invented Ethyl and Freon. 3. Post-reading questions. * It sounded more scientific and it hid the word 'lead'. * It was used as an additive for cars to run smoothly. * Some workers were poisoned, some were mentally disabled, some died, some went insane. The inventor was poisoned and had to take a year off. * It was used in refrigerators and aerosol cans to replace the toxic chemicals used in them. * An invention of his own. * See the comment made by J. R. McNeil, environmental historian/Students' own answers. * Students' own answers.