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Nativity Scene, Adoration of the Magi, Church of the Birth of the Virgin Mary, Montenegro

Why Is Christmas in December?

Lusitania sinking, illustration from The War of the Nations (New York), December 31, 1919. World War I, WWI. This image is one of three on the page. (See source file for the other two.)

7 of the World’s Deadliest Shipwrecks

Secret Service Agent Listens To Earpiece

Secret Service Code Names of 11 U.S. Presidents

Casino. Gambling. Slots. Slot machine. Luck. Rich. Neon. Hit the Jackpot neon sign lights up casino window.

Brain Games: 8 Philosophical Puzzles and Paradoxes

illustration of the walking titanosaurus, Patagotitan mayorum

Titanosaurs: 8 of the World's Biggest Dinosaurs

Mona Lisa, oil on wood panel by Leonardo da Vinci, c. 1503-06; in the Louvre, Paris, France. 77 x 53 cm.

Why Is the Mona Lisa So Famous?

Cheetah (Acinonyx jubatus) standing on rock, side view, Masai Mara National Reserve, Kenya

The Fastest Animals on Earth

solar still

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solar-powered desalination unit

In solar-powered desalination unit
…passive, unit, generically called a solar still, can be quite simple and inexpensive. The salt water in the desalination unit is heated by the Sun, converting the liquid to water vapour (a gas). As it is heated, the water vapour rises to the top of the unit, collects on the…
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