Quantum Field Theory
Quantum field theory is the framework that combines quantum mechanics with Einstein's special relativity to describe the fundamental particles of…
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Rosa Parks
Rosa Parks (1913 to 2005) was an American civil rights activist whose refusal to give up her bus seat to a white passenger helped spark a landmark…
Confucius
Confucius (551 to 479 BC) was a Chinese philosopher and teacher whose ideas about ethics, family, and good government shaped Chinese civilization for…
Napoleon Bonaparte
Napoleon Bonaparte (1769 to 1821) was a French military and political leader who rose during the French Revolution to become Emperor of the French…
Stephen Hawking
Stephen Hawking (1942 to 2018) was a British theoretical physicist who became one of the most famous scientists of his time, renowned for his work on…
Frida Kahlo
Frida Kahlo (1907 to 1954) was a Mexican painter known for her vivid, deeply personal self portraits and her use of Mexican folk traditions. Once…
Wolfgang Amadeus Mozart
Wolfgang Amadeus Mozart (1756 to 1791) was an Austrian composer regarded as one of the greatest musical geniuses in history. A child prodigy who…
Aristotle
Aristotle (384 to 322 BC) was an ancient Greek philosopher and scientist whose work shaped Western thought for two thousand years. He wrote on an…
The Origin of the Etruscans
The Etruscans were a sophisticated people who flourished in ancient Italy before Rome rose to power, leaving rich art and a language unlike any…
The Wow! Signal
The Wow! signal was a strong, unexplained radio signal detected in 1977 by a telescope scanning the sky for possible messages from other…
Ball Lightning
Ball lightning is a reported phenomenon in which a glowing, floating sphere of light appears, usually during thunderstorms. Many people claim to have…
How the Pyramids Were Built
The Great Pyramids of Egypt are among the most astonishing structures ever built, yet exactly how the ancient Egyptians raised them, with millions of…
The Hubble Tension
The Hubble tension is a genuine and growing puzzle in cosmology: two careful ways of measuring how fast the universe is expanding give answers that…
Does Language Shape Thought
Does the language we speak shape the way we think? This question, sometimes called linguistic relativity, has fascinated and divided scholars for…
What Killed the Ice Age Megafauna
At the end of the last ice age, many of the world's largest animals, the megafauna, went extinct, from woolly mammoths to giant ground sloths.…
The Origins of Modern Humans
Where and how our own species, Homo sapiens, arose is a question of intense scientific interest. The broad outline, an African origin, is well…
Why the Neanderthals Died Out
Neanderthals were a species of ancient humans who lived across Europe and Asia for hundreds of thousands of years before disappearing around 40,000…
The Nature of Time
Time is one of the most familiar parts of our experience, yet what it really is remains one of the deepest and most contested questions in physics…
Why Do We Dream
Dreams, the vivid stories the mind plays out during sleep, are universal yet deeply mysterious. That we dream is obvious; why we dream, and what…
What Caused the Great Dying
The Permian extinction, often called the Great Dying, was the most severe mass extinction in Earth's history, around 252 million years ago, when the…
Martin Luther King Jr.
Martin Luther King Jr. (1929 to 1968) was an American Baptist minister and the most prominent leader of the civil rights movement, which fought to…