What Makes Water Wet?

Donning his regular work attire—jeans and a Hawaiian shirt—Richard Saykally tells me in four words the answer to a question I had often pondered in the shower: Why is water wet?

Source: Ingenious: Richard Saykally

Just the phrase “strong tetrahedral hydrogen bonding” may not mean much to you. It starts to mean a little more though when you think not just about how it fits together, but also the ways in which water’s tetrahedral hydrogen bonds are unusual.