VOA-Sparrow Clinic The VOA-Sparrow Clinic is a collaboration between Volunteers of America and Sparrow Hospital, providing both physical and mental health care to the homeless in the Lansing area. Their location is 430 N Larch in Lansing.
Answers. Best Answer: Proposed to be an element by Carl Wilhelm Scheele in 1774, manganese was discovered by Johan Gottlieb Gahn, a Swedish chemist, by heating the mineral pyrolusite (MnO2) in the presence of charcoal later that year.
In 1666, while studying the teeth of great white sharks, naturalist Nicolaus Steno made the realization that these âtongue stonesâ were actually sharkâs teeth. His biggest discovery was that these teeth had kept their form, but not their composition â that theyâd been turned into rock over a very long period of time.