Every chemical reaction faces a barrier: For substances to react with one another, it is first necessary to supply energy. In ...

Actinides are a group of heavy, radioactive elements that include uranium, plutonium, americium, curium, berkelium and californium. Understanding how these elements bond with other atoms (known as ...

The major histocompatibility complex (MHC) class I homolog, MICA, is a stress-inducible ligand for NKG2D, a C-type lectin–like activating immunoreceptor. The crystal structure of this ligand-receptor ...

Physics is the search for and application of rules that can help us understand and predict the world around us. Central to physics are ideas such as energy, mass, particles and waves. Physics attempts ...

Meghnad Saha was nominated for the Nobel Prize five times but never received it. Yet his ionisation equation, decoding how ...