Explore Capsules

7 capsules

String Theory and Falsifiability: The Test of Real Science

String Theory and Falsifiability: The Test of Real Science

Science earns its authority by making predictions that could fail, and string theory doesn't. Against its popularity among physicists, the argument here places untestable theory closer to metaphysics than physics, however elegant the math. Taking this view means judging every theory by whether an experiment could ever prove it wrong.

String theory · 74 stops · ~148 minFree
Electric Circuits Explained: Fields, Charges, and Teaching Models

Electric Circuits Explained: Fields, Charges, and Teaching Models

The water-pipe picture of electricity is comfortable, but it quietly breaks down when you ask how energy actually reaches a lightbulb. These explanations split on the best replacement: energy traveling through fields around the wire, moving charges governed by Coulomb's law, or teaching methods built to dismantle the misconceptions first. Pick the account that finally makes circuits make sense to you.

Electricity · 48 stops · ~96 minFree
Climate Tipping Points: Models, Risks, and Policy Tradeoffs

Climate Tipping Points: Models, Risks, and Policy Tradeoffs

Ice sheets, ocean currents, and cloud physics could shift Earth's climate faster than the smooth curves in most projections. The findings diverge on how close those tipping points are, how much to trust the models that predict them, and how finance and policy should price risks that arrive suddenly rather than gradually. What you take from them shapes how urgent, and how hedged, you think climate decisions need to be.

Climate change · 115 stops · ~230 minFree
How Planes Fly: Bernoulli, Newton, and Viscosity

How Planes Fly: Bernoulli, Newton, and Viscosity

The textbook says planes fly because air moves faster over the curved top of a wing, but that explains only part of the lift. These explanations cover how wings turn air downward by Newton's third law, why viscosity matters, and where Bernoulli's shortcut falls short. You can build the understanding of flight that actually holds up.

Aerodynamics · 48 stops · ~96 minFree
5G Tower Health Fears: Physics, Psychology, and Precaution

5G Tower Health Fears: Physics, Psychology, and Precaution

5G towers went up alongside a wave of health fears, and the responses to those fears don't line up. Some arguments hold that basic physics rules out harm, one traces the anxiety to psychology rather than radiation, and another still counsels precaution despite thin evidence. Weighing them settles how much attention the worry deserves.

5G · 40 stops · ~80 minFree
Moon Landing Hoax Claims: Evidence, Physics, and Rebuttals

Moon Landing Hoax Claims: Evidence, Physics, and Rebuttals

Moon landing hoax claims often focus on photographs, radiation, shadows, the flag, and missing or degraded mission records. This account examines the main allegations alongside the physics, camera science, mission evidence, and historical context used to rebut them. Readers will be able to assess each claim on its merits and understand why the Apollo landings remain strongly supported by the evidence.

Apollo missions · 65 stops · ~130 minFree
The Great Wall from Space: Vision, Testimony, and Myth

The Great Wall from Space: Vision, Testimony, and Myth

The claim that the Great Wall is visible from orbit survives in textbooks and trivia nights despite astronauts saying otherwise. The arguments here approach the myth from different angles: the physics of human eyesight, firsthand astronaut testimony, the role of cameras and optical aids, and why comfortable falsehoods outlive clear corrections. It becomes a lesson in how to test what everyone knows.

Great Wall of China · 65 stops · ~130 minFree