Groundhog Day Meaning

Posted on Feb 2, 2026 xkcd.com

Originally, the ceremony used a variety of rodents and mustelids, but over time most people agreed it made sense to standardize on a specific individual ground squirrel in Pennsylvania.

Proof Without Content

Posted on Jan 30, 2026 xkcd.com

There's also a proof without content of a conjecture without content, but it's left as an exercise for the reader.

Chemical Formula

Posted on Jan 28, 2026 xkcd.com

Some of the atoms in the molecule are very weakly bound.

Early Arthropods

Posted on Jan 26, 2026 xkcd.com

'Ugh, I'm never going to be like spiders. My descendants will all just be normal arthropods who mind their own busines and don't do anything weird.' --The ancestor of a bunch of eusocial insects