The colors of rubies and emeralds are so striking that they define shades of red and green—ruby red and emerald green. But ...

Lithium-ion batteries have an internal chemistry that leads to major fires and toxic pollutants when they combust. What role ...

Both rubies and emeralds are minerals, which is a type of rock with a consistent chemical composition and a highly ordered structure at the atomic level.

One feature of compounds made with transition metals is their intense colour. There are many examples in nature, including gemstones and paint pigments. Even the colour of blood comes from the protein ...

Rubies and emeralds have the colors they do because, like many substances, they absorb some colors of light. Most visible light, like sunlight, is composed of all the colors of the rainbow: red, ...

Researchers have proposed using polymer membranes modified with copper, zinc, and chromium metal ions for water purification. These polymers were used for the first time in water purification via ...

Zimbabwe's future is closely tied to global energy trends and critical minerals demand, requiring thorough geological surveys to accurately assess resources, inform decisions and attract potential ...

The group first followed the so-called MIVOC path (for Metal Ion from Volatile Organic Compounds), where ... The same method was applied several years later to chromium-54 to study the fission of ...