What’s the problem? Access to clean water brings the priceless gifts of dignity and hope, essential for healthy communities. Engineers … More

Use a small quantity of modeling clay to make boats that float in a tub of water. The object is … More

Channel Tunnel – The 31-mile Channel Tunnel (Chunnel) fulfilled a centuries-old dream by linking Britain and the rest of Europe. … More

Castle – a type of fortified structure built in Europe and the Middle East during the Middle Ages by nobility. … More

Fan – a machine used to create flow within a fluid, typically a gas such as air. The fan consists … More

Stop the car! Step on the brake pedal and the car comes to a stop. But there is more to … More

Centrifugal pump – converts the input power to kinetic energy in the liquid by accelerating the liquid by a revolving … More

Ceramic – an inorganic compound, non-metallic, solid material comprising metal, non-metal or metalloid atoms primarily held in ionic and covalent … More

Carbon – the chemical element with symbol C and atomic number 6. It is nonmetallic and tetravalent—making four electrons available … More

Cartoon – a type of illustration, possibly animated, typically in a non-realistic or semi-realistic style. The specific meaning has evolved … More

Cantilever bridges are built using cantilevers—horizontal beams supported on only one end. Most cantilever bridges use a pair of continuous … More

Cantilever – a beam anchored at only one end. The beam carries the load to the support where it is … More

Soda Can Pop-Tab – Ernie Fraze, the inventor of the soda can pop-tab. Fraze set out to improve the beverage … More