Better Explained is a web site created by Kalid Azad based on the idea that
There’s always a better way to explain a topic. Insights are fluid, mutable, and work for different people.
He focuses on math and programming (web technologies) with a little bit of the kitchen sink thrown in.
His ability to use a narrative voice and the freedom to add graphics put these explanations in a different category from the more authoritative voices heard on wikipedia but avoid the we have everything and here’s five ads too feel of about.com.
His Another Look at Prime Numbers takes the otherwise for math freaks only topic of these oddly behaving numbers and looks at them from a very different perspective Chemistry. Odd and amusing and likely to stay with you for while.
While some experts quibble with a few of his statements. (Politely.) The ideas are made clear for the layman — and reading the comments will show you where the little gaps were covered over.
I’ve got his two articles on version control queued up for “waiting around for other people” reading.