<span>Well, I'm pretty sure there are four. The northern and southern hemispheres, and then the eastern and western hemispheres.</span>
Sub-Saharan Africa<span> is, geographically, the area of the continent of </span>Africa<span> that lies south of the </span>Sahara<span> Desert. Politically, it consists of all </span>African<span> countries that are fully or partially located south of the </span>Sahara<span> (excluding Sudan, even though Sudan sits in the Eastern portion of the </span>Sahara<span> desert).</span>
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A New Kind of Light in the Universe? “Super-Planckian” Material Emits Light That Exceeds Limits of Natural Law
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the envelope of gases surrounding the earth or another planet.
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