What we read and how we read it has changed a lot in two decades.

And the word "Amazon" brought to mind a river in South America or a very tall woman.
A lot has changed in two decades.
Driven by Amazon.com, about half of all books are now bought online, a click away. More than 20% are downloaded. Some 40% of adults have e-readers, tablets or other devices to read e-books.
And Rowling and Collins? They have a combined total of 225 million copies in print of the books (10 in all) of their two series for children and teens, Harry Potter and The Hunger Games.
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