Spectral analysis of sunlight reveals the presence of numerous elements, including hydrogen, sodium, iron, and calcium. Hydrogen and helium constitute approximately 98% of the Sun's mass. Heavier ...

INDIANAPOLIS, March 26, 2023 — In chemistry, we have He, Fe and Ca — but what about do, re and mi? Hauntingly beautiful melodies aren’t the first things that come to mind when looking at the periodic ...

Rare earth elements are critical to many industries—used in electric motors, medical imaging and diagnostics, oil and gas refining, and computer and phone screens. The 17 rare earth elements all have ...