GIF version which wouldn't show up: Image source above. Not a spoiler. This puzzle is just about the closest thing to a themeless you'll...

Image source. (Spoiler alert, but then again, the image itself is kind of a spoiler.) Lots of announcements today! 1. Cruciverbology is...

Image source. (Not a spoiler) Science fiction falls under the umbrella of this blog, right? I think it does. This puzzle was my tribute...

Image source. (Not a spoiler.) I don't have a new puzzle ready for this week, partly because I was busy the previous weekend and partly...

Image source. (Spoiler alert.) After a break for the holidays, here's a brand-new New Year's puzzle (first time typing "2023" for the...

Image source. (Spoiler alert.) This puzzle has a visual trick that's central to the theme. The solution below explains what's going on,...

Image source. (Spoiler alert.) ***IMPORTANT UPDATE*** It's come to my attention that a file display error has made all of my uploaded...

Image source. (This one is not a spoiler.) This puzzle isn't strictly science-related, though there is a mathematical fascination with...

Image source. (Fair warning, many image source links will be spoilers.) This theme is a bit smaller than some others on this site, but I...

Image source. (Fair warning, many image source links will be spoilers.) I had trouble coming up with a title for this puzzle because most...

Image source. (Fair warning, many image source links will be spoilers.) This one is a bit more science policy-oriented, but I promise...

Image source. (Fair warning, many image source links will be spoilers.) This puzzle is from a year or two ago (hence the CDC reference,...

Image source. (Fair warning, many image source links will be spoilers.) I'll start with one of popular science's hottest topics right...