How Rocks And Minerals Give Fireworks Their Colors
Apart blue, green, red and yellow, any other fireworks color can be obtained by a mineral mix. For example, purple can be ...
Acid dissolution of mining waste—a new eco-friendly method for extracting metals
New research shows that magnesium and other metals in mine waste can be solubilized and recovered thanks to acid-producing bacteria. Researcher Nathan van Wyk believes that the method has great ...