Why Does It Feel Good to Scratch an Itch?

That insistent tingle, that maddening crawl—an itch is one of the most distracting and uncomfortable sensations we experience. When an itch strikes, whether from a pesky mosquito bite, dry skin,…

Why is Water Polar?

Water is a ubiquitous and essential substance, vital for life as we know it. One of its most crucial characteristics is its polarity. But what does it mean for water…