Do You Know?
How Lightning Gets Hotter Than the Surface of the Sun
A single lightning bolt can reach temperatures of around 30,000 Kelvin—roughly five times hotter than the sun's surface—in just a fraction of a second.
07 Sep 2026Do You Know?
Do You Know?
The Antikythera Mechanism: A 2,000-Year-Old Analog Computer
Ancient Greeks built a sophisticated mechanical device over 2,000 years ago that predicted astronomical positions—centuries before similar technology reappeared in Europe.
07 Sep 2026
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Why the Eiffel Tower Grows Taller in Summer
The Eiffel Tower can be up to 15 centimetres taller on hot summer days than in winter, purely due to thermal expansion of its iron structure.
07 Sep 2026
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Why the Speed of Light Is a Universal Speed Limit
Nothing in the universe can travel faster than light—and this isn't just a rule; it's built into the very fabric of space and time itself.
07 Sep 2026
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Is Glass Actually a Liquid? The Myth of Slow-Moving Glass
Glass is a solid, not a slow-moving liquid—a misconception born from medieval misunderstandings about its structure.
06 Sep 2026
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How Much Wiring Is Packed Inside a Boeing 747
A Boeing 747 contains roughly 150 miles (240 kilometres) of wiring—enough to stretch across Tanzania.
06 Sep 2026
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Why Roman Concrete Outlasts Modern Concrete
Roman concrete structures built 2,000 years ago are still standing strong, while modern concrete often needs replacing after just 50–100 years—and the secret lies in volcanic ash.
06 Sep 2026
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Voyager 1: The Human-Made Object That Left the Solar System
Voyager 1, launched in 1977, became the first human-made object to leave the solar system—and it's still sending data home from the edge of interstellar space.
06 Sep 2026
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How the Great Pyramid's Stones Were Cut With Bronze-Age Tools
Ancient Egyptian workers shaped massive limestone blocks for the Great Pyramid using simple copper and bronze tools—no advanced technology needed.
06 Sep 2026
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Why Honey Never Spoils, Even After Thousands of Years
Archaeologists have found 3,000-year-old honey in Egyptian tombs that was still perfectly edible—and the science behind this is genuinely fascinating.
06 Sep 2026