目录

●Unit One
PartI The Creation of the Automotive World
PartII How the Automobile Shaped America:The 'Burbs
PartIII America's Romance with the Car
PartIV The Benefits and Drawbacks of EVs
PartV The Automobile Shapes the City
Unit Two
PartI Climate Change-What You Can Do
PartII The History and Development of Suburbs
PartIII Millennials Are Happiest in Cities
PartIV The Advantages of Suburban and City Life
PartV Time to Leave the Big City for the Little City
Unit Three
PartI Black Holes
PartII Carl Sagan and the Cosmos Legacy 
PartIII The Hubble Space Telescope 
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