When it comes to plant-based calcium supplements, there are a variety of options available, including those made from algae, seaweed, and various plant extracts. However, for those looking for a ...

The European Union has strict rules for organic foods and its highest court ruled against allowing a calcium-rich powder derived from marine algae to be added to organic soy and rice drinks. This ...

More NASA Earth Observatory "Blue-green algae are a type of bacteria known ... fed by the Truckee River and is known for its striking calcium carbonate formations called tufas.