Manganese

Butternut squash is a good source of manganese, potassium, and vitamins A, C, and E.

Manganese is a chemical element with atomic number 25 and element symbol Mn.

Gabon faces fluctuating international prices for its oil, timber, and manganese exports.

Nealson displayed the phenomenon in a time-lapse video that shows Shewanella making a piece of manganese oxide slowly disappear.

Oxygen levels on Earth skyrocketed 2.4 billion years ago, when cyanobacteria evolved photosynthesis:[…]. The evolutionary precursor of photosynthesis is still under debate, and a new study sheds light. The critical component of the photosynthetic system is the “water-oxidizing complex”, made up of manganese atoms and a calcium atom.

For the past ten years Brad Racette, a neurologist at Washington University in St Louis, Missouri, has been tracking those effects, paying special attention to welders, since they are exposed to more manganese than most people. Being harder than iron, manganese is often used to strengthen steel and is present in many industrial emissions, including welding fumes.