In the 1950’s, the United States was hit with an unusually cold and dry winter. The ski season was highly affected and many ski resorts were only open for a few weeks. The problem was that there wasn’t enough snow

Before refrigerators were invented, humans would preserve their food by either covering their food in copious amounts of salt, or by burying their food deep in the snow. Today we use refrigerators to keep our food cold and preserve it

Projectors are used throughout the world and are often used for some pretty cool things. It is always exciting to watch a movie on the big screen, set up a party in a place with no tv, or simply make

In the last blog I talked about how oxygen was created for the sailors who live inside of submarines. The O2 was created either using specialized electrolysis machines or by burning self-oxidizing candles. Once the oxygen was created, the sailors

Submarines are some of the most interesting machines created for sea exploration and naval warfare. Some submarines can spend up to 3 months under the surface at a time, but that raises one important question. How do humans breathe underwater

Water is one of the most precious resources known to man, yet we often take it for granted. We use it to flush our toilets, wash our clothes, make our food, fabricate machinery, and more. Access to water has become

Engines run a number of things in our everyday lives. People use engines to transport themselves to work, mow their grass, pump water, and make energy. These engines all fall into two main categories: two-stroke engines and four-stroke engines. Both