Researchers from the Weizmann Institute of Science have discovered how urchins get the calcium they need to build hard shells and spines, possibly altering the way scientists view the process of biomineralization.
Calcium supplements increase the risk of coronary artery calcification
An innovative use of tool-making was recently observed in a captive population of greater vasa parrots. It turns out these resourceful birds make tools to grind seashells into nutritious calcium powder.
After comparing urban fruits to their commercially grown counterparts, researchers have determined that the urban-grown produce is more nutrient-rich in calcium and iron and is free of lead and arsenic.