Discover the physical world of rivers, glaciers and coasts; the human world of population changes and migration; agriculture, including farming, GM foods and the green revolution; and industry, from tourism to ports and old industry. "I Used To Know That: Geography" is an accessible yet fun way to revisit all the stuff you have forgotten from your school days.

• I Used to Know That: General Science
• I Used to Know That: History
• I Used to Know That: Maths
• I Wish I Knew That: Cool Stuff You Need to Know
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