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An alloy of aluminium and gallium in pellet form added to water can be used to generate hydrogen. The process also produces alumina, but the expensive gallium, which prevents the formation of an oxide skin on the pellets, can be re-used. This has important potential implications for a hydrogen economy, as hydrogen can be produced on-site and does not need to be transported.
What else can it produce?
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The answer: alumina

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Bantu-speaking peoples who founded tribes during the Bantu expansions largely displaced and absorbed the earliest inhabitants of the region, the Pygmy people, about 1500 BC. The Bakongo, a Bantu ethnic group that also occupied parts of present-day Angola, Gabon, and Democratic Republic of the Congo, formed the basis for ethnic affinities and rivalries among those countries. Several Bantu kingdomsnotably those of the Kongo, the Loango, and the Tekebuilt trade links leading into the Congo River basin.
When did Bantu tribes arrive in the area formerly populated by the Pygmy people?
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The answer: 1500 BC

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In 2010, the G.R. N'Namdi Gallery opened in a 16,000-square-foot (1,500 m2) complex in Midtown. Important history of America and the Detroit area are exhibited at The Henry Ford in Dearborn, the United States' largest indoor-outdoor museum complex. The Detroit Historical Society provides information about tours of area churches, skyscrapers, and mansions. Inside Detroit, meanwhile, hosts tours, educational programming, and a downtown welcome center. Other sites of interest are the Detroit Zoo in Royal Oak, the Cranbrook Art Museum in Bloomfield Hills, the Anna Scripps Whitcomb Conservatory on Belle Isle, and Walter P. Chrysler Museum in Auburn Hills.
What Detroit gallery opened in 2010?
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The answer: G.R. N'Namdi Gallery

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Zinc is included in most single tablet over-the-counter daily vitamin and mineral supplements. Preparations include zinc oxide, zinc acetate, and zinc gluconate. It is believed to possess antioxidant properties, which may protect against accelerated aging of the skin and muscles of the body; studies differ as to its effectiveness. Zinc also helps speed up the healing process after an injury. It is also suspected of being beneficial to the body's immune system. Indeed, zinc deficiency may have effects on virtually all parts of the human immune system.
What consumable product is zinc included in?
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The answer:
vitamin and mineral supplements