Richard Saunders (Australian Skeptics, Skeptic Zone podcast, and more) brings the astrologer back to Earth and away from fantasy.

A few months ago I released an experiment video explaining how Eratosthenes calculated the circumference of the Earth using the shadow of sticks. The method was performed almost two millenia ago, and produced quite accurate results (considering the ‘equipment’ used). But it was far from being the only (or first) method to understand our planet’s [...]

Notice: This experiment is incomplete, and unclear. There were several attempts to correctly state the situation, but at the moment, a new re-make is planned to explain exactly and thoroughly what is happening to create this phenomenon.
Well, this is going to be sweet, short and to the point: Fire in closed spaces can really [...]

Water is dense. Alcohol is Dense. But they’re not the same density, no siree. They’re differently densed. Which means we can use that to our advantage. And we do, in this experiment.
Well, this is more of a “Show off your geektitude” physics trick that will amaze and enchant your buddies anywhere! Okay, well, maybe not [...]