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existence
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Gottlob Frege
Discover the difference between the observable universe and the whole universe
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Plato (left) and Aristotle, detail from School of Athens, fresco by Raphael, 1508-11; in the Stanza della Segnatura, the Vatican. Plato points to the heavens and the realm of Forms, Aristotle to the earth and the realm of things.
Plato and Aristotle: How Do They Differ?
A human Inuit skull in a stone chambered cairn in Ilulissat in Greenland. These ancient graves are pre christian and are at least 2000
14 Tough Questions Answered
Aristotle (384-322 BC), Ancient Greek philosopher and scientist. One of the most influential philosophers in the history of Western thought, Aristotle established the foundations for the modern scientific method of enquiry. Statue
Philosophers to Know, Part I
Immanuel Kant (1724-1804), German philosopher. Print published in London, 1812. Profile portrait surrounded by Ouroboros ancient Egyptian-Greek symbolic serpent with tail in mouth devouring itself representing unity of material and spiritual in eternal...
Philosophers to Know, Part II
Casino. Gambling. Slots. Slot machine. Luck. Rich. Neon. Hit the Jackpot neon sign lights up casino window.
Brain Games: 8 Philosophical Puzzles and Paradoxes
Discover
Illustration for Demystified "How Dangerous is Quicksand"
How Deadly Is Quicksand?
King Cobra snake in Malaysia. (reptile)
9 of the World’s Deadliest Snakes
Titanic infographic. The 30th anniversary of its discovery is September 1, 2015. SPOTLIGHT VERSION.
Timeline of the Titanic’s Final Hours
Fish. Lionfish. Lion-fish. Turkey fish. Fire-fish. Red lionfish. Pterois volitans. Venomous fin spines. Coral reefs. Underwater. Ocean. Red lionfish swims by seaweed.
10 of the World’s Most Dangerous Fish
Two chicks near an egg with a white background (poultry, chick, chickens, birds).
What Do Eggs Have to Do with Easter?
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
July, 2006, Launch of Space Shuttle Discovery STS-121. See attached for full caption information.
Will Light-Speed Space Travel Ever Be Possible?

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Gottlob Frege
Discover the difference between the observable universe and the whole universe
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