Old Spanish Trail half dollar

Old Spanish Trail half dollar.
The Old Spanish Trail half dollar was a commemorative coin struck by the United States Bureau of the Mint in 1935. It was designed by L. W. Hoffecker, a coin dealer who had been the moving force behind the effort for a Gadsden Purchase half dollar, vetoed by President Herbert Hoover in 1930, and he sought another commemorative coin that he could control if authorizing legislation was passed. He chose the travels of Spanish officer Álvar Núñez Cabeza de Vaca in the early 16th century. Though Hoffecker's hometown of El Paso, Texas, is featured on the coin, Cabeza de Vaca came nowhere near its site. Hoffecker purchased the coins from the Mint at face value and sold them to collectors, ostensibly on behalf of the local museum, but in fact for his personal profit, something he later denied before Congress. His design for the coin, featuring the head of a cow (the English meaning of cabeza de vaca), has brought mixed reviews from numismatic commentators.

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Pigeon guillemot

Pigeon guillemot.
The pigeon guillemot (Cepphus columba) is a seabird in the auk family, Alcidae. It is dark brown with a black iridescent sheen and a distinctive wing patch broken by a brown-black wedge in breeding plumage. Its non-breeding plumage has mottled grey and black upperparts and white underparts. The long bill is black, as are the claws. The legs, feet, and inside of the mouth are red. It closely resembles the black guillemot, which is slightly smaller and lacks the dark wing wedge; combined, the two form a superspecies. Pigeon guillemots are found on North Pacific coastal waters, from Siberia through Alaska to California. They dive and pursue prey underwater, mostly small fish and marine invertebrates near the sea floor. They are monogamous breeders, nesting in small colonies close to the shore. Both parents incubate the eggs and feed the chicks. The species has a large, stable population and wide range.

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Earth

Earth.
Earth is the third planet from the Sun and the only astronomical object known to harbor life. It is the densest planet in the Solar System and the largest and most massive of the four rocky planets. About 29% of Earth's surface is land, with the remaining 71% covered with water and much of Earth's polar regions covered in ice. Earth's interior is active with a solid iron inner core, a liquid outer core that generates Earth's magnetic field, and a convective mantle that drives plate tectonics. Earth formed over 4.5 billion years ago. Within the first billion years of Earth's history, life appeared in the oceans and began to affect Earth's atmosphere and surface. Since then, the combination of Earth's distance from the Sun, physical properties and geological history have allowed life to evolve and thrive. Almost 8 billion humans live on Earth and depend on its biosphere and natural resources for their survival, but increasingly impact Earth's surface, atmosphere and other life. (This article is part of a featured topic: Solar System.)

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Battle of the Saw

Battle of the Saw.
The Battle of the Saw was the culminating battle of a campaign fought between a Carthaginian army led by Hamilcar Barca and a rebel force led by Spendius in 238 BC in what is now northern Tunisia. Carthage was fighting a coalition of mutinous soldiers and rebellious African cities in the Mercenary War which had started in 240 BC. Unable to confront the Carthaginian war elephants and cavalry on open ground, the rebels stayed on higher and rougher terrain and harassed the Carthaginian army. After several months of campaigning, Hamilcar trapped the rebels. Pinned against the mountains, with their supply lines blockaded and with their food exhausted, the rebels ate their horses, their prisoners and then their slaves, hoping that their comrades in Tunis would sortie to rescue them. Eventually, the Carthaginians, led by their elephants, attacked the starving rebels and they were massacred to a man. The captured rebel leaders were crucified (depiction shown) in sight of their comrades in Tunis.