RAPID CITY, S.D. — The 25 th annual Black Hills Model Engine Expo was held at the Fine Arts Building of the Central States ...

Children don’t really change much from generation to generation, which explains the evergreen appeal of many children’s toys, games, and amusements that were created generations ago and are still ...

When your steam engine build requires multiple microscopes, including those of the scanning electron variety, you know you’re building something really, really tiny. All of the usual tiny superlatives ...

If you’re looking for a way to let the kids get hand-ons with science this is a perfect example of how to do it. [Erich] wanted to help out with his 7-year-old’s science project. They decided to build ...