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How a Closed Terrarium Can Live for Decades, No Water Added

home.howstuffworks.com/closed-terrarium.htm

David Latimer put a plant and some compost in a bottle in 1960. It's still alive and thriving over 60 years later. How does a closed ecosystem like this work?

Hiroshima Shadows Preserve One of History's Darkest Moments

history.howstuffworks.com/world-war-ii/hiroshima-shadows.htm

One of the most haunting images of World War II is the "human shadow" etched into the stone steps of the City of Hiroshima branch of Sumitomo Bank.

Amazon Milk Frog: Named for Its Defense, Not Its Color

animals.howstuffworks.com/amphibians/amazon-milk-frog.htm

With its striking colors and unusual name, the Amazon milk frog is one of the most charismatic amphibians in the rainforest. This tree-dwelling species lives high in the canopy, often in water-filled tree holes, and makes its home in parts of Brazil, Peru, Ecuador, and French Guiana.

Deep Sea Jellyfish Have 30-foot-long Tentacles

animals.howstuffworks.com/marine-life/deep-sea-jellyfish.htm

In the deepest, darkest parts of the ocean, far below where visible light can reach, swims one of the strangest animals on Earth: the deep sea jellyfish. These mysterious creatures thrive in a zone so dark and pressurized it's nicknamed the midnight zone.

What Is a Group of Elephants Called?

animals.howstuffworks.com/mammals/what-is-a-group-of-elephants-called.htm

If you've ever seen elephants moving through the savannah or a dense forest, you might wonder, what is a group of elephants called?

Why Did the Aztec Empire Fall? How Indigenous Allies Helped the Spanish

history.howstuffworks.com/world-history/why-did-the-aztec-empire-fall.htm

In the early 1500s, the Aztecs ruled a sprawling empire across central Mexico. Their capital city, Tenochtitlán, was the largest city in the Americas at the time.

10 Portuguese Speaking Countries and Regions Spanning 4 Continents

people.howstuffworks.com/portuguese-speaking-countries.htm

Portuguese-speaking countries form a global network connected by a shared language, history, and culture. Portuguese is a widely spoken language across South America, Europe, Africa, and parts of Asia, making it one of the most spoken languages in the world.

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