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A POTD is an acronym for "Photo of the Day", "Picture of the Day", "Post of the Day" or "Poll of the Day". It is a term most commonly used by online digital photography communities as an honor to outstanding photos that are selected daily from among that community's membership. They can either be tagged as POTD or displayed in a special page on that site...

Eyjafjallajökull—translated as "Eyja-fjalla glacier" or "island-fells glacier"—is one of the smaller glaciers of Iceland, situated to the north of Skógar and to the west of Mýrdalsjökull. The icecap of the glacier covers a volcano with a summit elevation of 1,666 metres (5,466 ft). The volcano has erupted relatively frequently since the last glacial period. Around December 2009, seismic activity was detected in the volcano area, with thousands of small earthquakes...

Africa is the world's second-largest and second most-populous continent, after Asia. At about 30.2 million km² (11.7 million sq mi) including adjacent islands, it covers 6% of the Earth's total surface area and 20.4% of the total land area. With a billion people (as of 2009, see table) in 61 territories, it accounts for about 14.72% of the World's human population...