Menu
> The huge dome of Saint Peter’s Church in Vatican City looks like > this when you look up at it from inside. Your big toe might wear away, too, if people kissed it every day for years and years…
Here’s a riddle! What’s hard as a rock, light as a feather, is made from something you throw away every day, and will last for many years? It’s a hard riddle, but the answer will lead you into a…
> mercury ore (cinnabar) and mercury Imagine a dry liquid—a liquid you can stick your finger into without getting it wet. There is such a liquid. It’s a melted metal that stays melted even when…
Recent Comments