F and I are looking at pictures of Patagonia. ("We're nerds, you realize", she said.) We ran across this:

It's a cave painting where it looks like the inhabitants placed their hands on the cave wall and somehow sprayed paint to leave silhouettes. Look at their thumbs - they're not offset. What's up with that? Or is it our thumbs that are unusual? Are the hands of modern-day Argentinian and Chilean Indians like that? Any North American Indians? Polynesians? The internet answers many questions but it also raises others.

Here's the site.

I did get one fairly obscure question answered last year. When Molly came to us I wondered if the way her coloring is distributed on her body could be a map of her development as an embryo. Strangely enough, I found several websites related to cat embryology, and discovered that I was right. Here is an example.