In this quick science demo, I show how tiny water beads transform when you add salt. First I compare dry beads to ones that have soaked in water for 24 hours, then I sprinkle salt on them and watch ...

But as surely as we all know those things, we also know that for us human beings, it’s not as simple as proclaiming, or even proving, that exercise can change our entire world. It’s not even as easy ...