Known for its sharp hourglass color zoning and double termination, Moroccan amethyst has been well documented and characterized in the past (Spring 2017 GNI, pp. 126–127). However, it was the precise ...

Researchers have retrieved samples of 1.4 billion-year-old air from ancient crystals and found something surprising about a supposedly “boring” time period. The team studied the gases and fluids ...

Microscopic image of fluid inclusions in 1.4-billion-year-old halite crystals, which preserve ancient air and brine.Justin Park/RPI Over a billion years ago, a shallow subtropical lake in what is now ...

More than a billion years ago, in a shallow basin across what is now northern Ontario, a subtropical lake much like modern-day Death Valley evaporated under the sun's gentle heat, leaving behind ...

Researchers have found ancient gases and fluids trapped in 1.4-billion-year-old halite crystals from northern Ontario, Canada. Their analyses directly constrain Mesoproterozoic (1.8 to 0.8 billion ...

If someone asked you to list a few car maintenance tasks you could do yourself, tire and oil changes may come to mind first (unless you're a project car person, in which case you'd respond with ...

Brakes are one of the most important components of any car, and most modern cars come equipped with a hydraulic braking system, which needs brake fluid to function. What does brake fluid exactly do?

With numerous types of brake fluid that come in a multitude of colors, being aware of what type of brake fluid you have is important to maintaining the health and long life of your vehicle. Before ...

Today, we’re exploring Google Ads brand settings, specifically brand inclusion and brand exclusion for Search and Performance Max. We’ll cover: Brand inclusion is a setting that restricts your Search ...

Amethyst geodes—some stretching 5 m long—dot the ancient lava flows of Uruguay’s Los Catalanes mining area. The geodes contain calcite, colorless quartz, and agate, another quartz mineral. Large ...