Have you ever had this unusual occurrence in your freezer? This one observant science teacher says:
We had a single stalagtite form from one cube in an ice cube tray. It rose about an inch, no more than an eighth of an inch in diameter, and tapering to a sharp point. How did that […]

Here’s a provocative question about the atmosphere, from one of those most curious citizens of the world — 6th graders.

“At sea level you take a breath and fill a sandwich bag with it easily. On Mt Everest, not using bottled air, could you do the same thing? I guess the question is “How […]

My friend and fellow science writer Jen Frazer has started a new blog (well, two actually, but let’s start with the first). I don’t know how she can spend a whole day at work writing copy, and then come home and spin out gorgeous and witty prose, but, hey, she didn’t win the AAAS Science […]

In this modern world, it gets tougher and tougher to figure out if someone is a Jim or a Jane. Whatever happened to the easy era of codpieces and corsets? Without those to fall back on, here’s a bit of physics you can use to figure it out in a pinch.
Have the person […]