Your guides to the weird side of the web show how to make a Cartesian diver in a bottle. Iran has reopened the Strait of Hormuz—but experts say it now holds a card that works almost like a nuclear ...

This is a science experiment that has been around for years, but still so much fun! It involves looking at buoyance and air pressure. You will need: An empty, clean (preferably clear) 1 liter or 2 ...