Researchers at the Vellore Institute of Technology in India have proposed a new classification of energy sources that is intended to go beyond the usual dichotomy between renewable and non-renewable, ...

Under the current system, classifiers make decisions about what information should be held secret in a largely closed setting. The culture of national security has traditionally placed a strong ...

A natural resource is defined as a form of energy and/or matter which is essential for the functioning of organisms, populations and ecosystems. In the case of humans, a natural resource, in his words ...

Energy materials can be categorized based on their function—whether for energy storage, conversion, or generation—or by their specific applications and technologies. Here, we explore energy materials ...