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Fire and Explosives – Chemistry in a Hurry
Fire and explosives are, at heart, the same chemistry running at wildly different speeds: rapid oxidation releasing energy. This episode covers the f…
1 month, 2 weeks ago
Smell and Taste – The Chemical Senses
Smell and taste are the body's chemical senses, detecting actual molecules rather than light or sound, and between them they quietly create most of w…
1 month, 2 weeks ago
The Oort Cloud – The Edge of the Solar System
Far beyond Neptune, past even the icy Kuiper Belt, astronomers believe an enormous, invisible shell of ancient comets surrounds the entire solar syst…
1 month, 3 weeks ago
El Niño and La Niña – Australia's Boom-and-Bust Rainfall
Ask an Australian farmer about the years that stick in their memory and you'll usually hear about extremes: a drought so long the dams cracked, or a …
1 month, 3 weeks ago
Glass – The Solid That Never Quite Settled
There's a persistent piece of trivia that old windows are thicker at the bottom because glass slowly flows downward over centuries, like an extremely…
1 month, 3 weeks ago
Hearing and Balance – Physics Inside Your Skull
Walk out of a loud concert and the world sounds muffled, with a faint ring that takes hours to fade — a small, temporary demonstration of just how mu…
1 month, 4 weeks ago
Eclipses – The Cosmic Coincidence
Stand under a leafy tree during a partial solar eclipse and something strange happens to the ground: instead of round blobs of sunlight, you get hund…
2 months ago
Ocean Currents – The Planet's Conveyor Belt
The ocean isn't the calm, flat expanse it can look like from the shore — it's laced with enormous rivers of moving water, from wind-driven surface cu…
2 months ago
Metals and Alloys – The Materials That Built Civilisation
A spoon bends; a ceramic mug shatters. That simple kitchen-table difference comes down to a "sea of electrons" binding metal atoms together, and it's…
2 months ago
Vision – How the Eye Builds a Picture
The sharp, seamless, full-colour picture you seem to be looking at right now isn't a direct recording of the world — it's a construction, built by yo…
2 months, 1 week ago