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In an article in the New York Times, January 31, 2015, Peter Brannen reports on the ongoing debate about what caused the extinction of the non-bird dinosaurs at the end of the Cretaceous period (see A Closer Look 8.5, p. 220).

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Credit: Emiliano Ponzi/NY Times

While to many, the NEO impact theory and the discovery of the Chicxulub impact crater is compelling evidence, some geologists point to enormous floods of lava in India, called the Deccan Traps, as an alternate explanation.

Read more about the debate here.

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