Add Yahoo as a preferred source to see more of our stories on Google. Whether you know it or not, you encounter crystals in your everyday life quite regularly. Table salt, sugar and snowflakes are ...

In 1912, scientists invented X-ray crystallography and revealed a crystal’s atomic structure for the first time Tess Joosse Humans have marveled at crystals for millennia. Viridescent emerald, rich ...

Above: A hexagonal (six-sided) snow crystal, classified as a stellar dendrite. This crystal was photographed with an Olympus TG-6 camera after it landed on the sleeve of the authors fleece jacket.