The Mississippi's curious origins

Article Abstract:

The origins of the Mississippi river and the processes by which it has come to flow along its route to reach the Gulf of Mexico are discussed. Passage of North America over a temporarily reinvigorated mantle hot spot caused uplift of a section of Ouachlta mountain range just north of the Gulf of Mexico in the mid-Cretaceous, forming an arch. Weathering eroded the newly formed highlands, reducing them to the level of adjacent lands.

Mississippi, Gulf of Mexico, Environmental aspects, Mississippi River, Appalachian Mountains, Erosion, Erosion (Geology)

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The mysterious origins of solar flares

Article Abstract:

A recording-breaking flare erupted near the edge of the sun on November 4, 2003 that can release the energy equivalent of billions of atomic bombs in the span of just a few minutes. The key turns out to be a sudden rearrangement of magnetic field lines, a phenomenon called reconnection.

United States, Solar flares, Solar magnetic field, Solar magnetic fields

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Origins of personal computing

Article Abstract:

The history of personal computing is examined from the Whirlwind experimental computer developed in 1944 to the current day.

Microcomputers, History

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