Gateway Arch reflects St. Louis’ role in the Westward Expansion of the United States during the nineteenth century. It was … More

Pictured: Close-up of the underside of a gecko’s foot as it walks on a glass wall. Van der Waals force … More

Gasoline engine – internal combustion engine which is often used for automobiles, aircraft, small mobile vehicles such as lawnmowers or … More

Giant Magellan Telescope – artist’s concept Giant Magellan Telescope (GMT), under construction in Chile, could help scientists answer big questions … More

Hazardous materials (HazMat) – any substance or material could adversely affect the safety of the public, handlers or carriers during … More

gaming – The act of playing a video, Internet or computer game. video game – an electronic game that involves … More

Garbage (waste, trash) – unwanted and discarded materials and objects. It is often also called trash, garbage, rubbish, or junk. … More

When MTBE (methyl tertiary butyl ether) was the replacement for tetraethyl lead in gasoline it solved some problems. In addition … More

The Roentgens’ Berlin Secretary Cabinet (video 2:20) – hidden features and intricate interior of this cabinet. A writing cabinet with … More

  Gardening is the practice of growing plants for their attractive flowers or foliage, and vegetables or fruits for consumption. … More

Forces are everywhere. Forces are a push or pull on an object. They can be due to phenomena such as … More

Friction is a force that holds back the movement of a sliding object. That’s it. Friction is just that simple. … More