Satellite images illustrate how water levels in Lake Mead have fallen in the past 25 years. Lake Mead supplies vital water to millions in Nevada, Arizona, California, and parts of Mexico. However, ...

Some species of fig trees store calcium carbonate in their trunks – essentially turning themselves (partially) into stone, new research has found. The ...

Petrified waterfalls are formed when mineral-rich water flows over rock surfaces and evaporates, leaving behind layers of ...

Blooms of coccolithophores can also be beneficial for the local environment. For example, their calcium carbonate scales can ...

Lake Natron is a soda lake in northern Tanzania with a volcanic geology that maintains the water's pH around 10.5, which is almost as caustic as ammonia. Some life-forms thrive there nevertheless.