The film discusses various types of engines that utilize heat energy for operation. It explains steam engines, which are reciprocating external combustion engines, and compares them to internal ...

This module connects ideas across topics in a first semester introductory chemistry course to explore the impacts of combustion reactions. By motivating students to understand the relationship between ...

A recently-discovered chemical process could have led to widespread formation of the greenhouse gas methane when Earth was young. The reaction doesn’t involve living organisms, so could have occurred ...