This article is from the archive of The New York Sun before the launch of its new website in 2022. The Sun has neither altered nor updated such articles… ...

Making rock candy is a great way to watch crystals form in real time. It's also an exercise in thermodynamic equilibrium. Also, you can eat it. What's not to love?

Molten granite formed the Pioneer Mountain Range in southwest Montana about 72-million years ago.As the granite cooled, water ...