Tag Archives: Amazon River

The Saguaro


The Saguaro

The saguaro is a large, candelabra-shaped cactus that can grow up to 50 feet (15 m). Native to the deserts of Mexico and the southwestern US, it takes up to 75 years to develop but can live more than 200 years and can weigh up to 10 tons (9,000 kg). This mammoth typically dies by being uprooted by wind or washouts. It produces edible red fruits and white flowers that bloom at night but remain open into the next day. What are “saguaro boots,” and how have they been used by Native Americans? More… Discuss

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‘s birthday: todayAlexander von Humboldt (1769)


Alexander von Humboldt (1769)

A German naturalist and explorer, Humboldt traveled extensively and made observations and discoveries too numerous to count. Among other things, he discovered the connection between the Amazon and Orinoco river systems, surmised that lack of oxygen causes altitude sickness, studied the ocean current off the western coast of South America that was known for a time as the Humboldt Current, and added to an understanding of the development of the Earth’s crust. To what did he devote his final years? More… Discuss