Learn how the Andes Mountains block warm moist air, causing heavy rainfall that feeds the Amazon River

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You can say that all tortoises are turtles, but not all turtles are tortoises.

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Learn about several types of turtles and lizards—such as Gila monsters, snapping turtles, and Komodo dragons—that are capable of harming humans.

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See the world through a deer's eyes. This visual comparison highlights the key differences between human trichromatic vision and deer dichromatic vision, showing how deer perceive shades of blue and yellow while red and orange hues appear muted.

Media Editor: Meg Matthias

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The city of Manaus, Brazil, at the confluence of the Negro and Amazon (Solimões) rivers.

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Learn about the origins of the Amazon River by following streams from the Andes Mountains to the Amazon basin.

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Deforestation of the Amazon River basin has followed a pattern of cutting, burning, farming, and grazing. This process is then repeated on adjacent plots of land, steadily pushing back the borders of the Amazon Rainforest.

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The Transamazonian highway was intended to connect several South American countries.