Today's featured picture Madagascar's six baobab Tree Armed Services Day UK Saturday -- FEC

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Date Posted: 05:16:03 06/30/12 Sat
Author: Today's featured article Yogo sapphires
Subject:

Today's featured picture Madagascar's six baobab Tree Armed Services Day UK Saturday

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Today's featured article
Yogo sapphires are a variety of corundum found only in Yogo Gulch, Montana, part of the Little Belt Mountains in Judith Basin County, on land once inhabited by the Piegan Blackfeet people. Yogos are typically cornflower blue in color, a result of their containing trace amounts of iron and titanium. Many gemologists consider them among the finest sapphires in the world. They have high uniform clarity and maintain their brilliance under artificial light. Because Yogo sapphires occur within a vertically dipping resistive igneous dike, mining efforts have been sporadic and rarely profitable. It is estimated that at least 28 million carats (5.6 t) of Yogos are still in the ground. The Smithsonian Institution first reported on Yogos in the museum's annual report on June 30, 1899. Jewelry containing Yogos was given to First Ladies Florence Harding and Bess Truman; in addition, many gems were sold in Europe. Today, several Yogo sapphires are part of the Smithsonian Institution's gem collection. In 1969, the sapphire was co-designated along with the agate as Montana's state gemstones. (more...)

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June 30: Armed Forces Day in the United Kingdom (2012)

1859 – French acrobat Charles Blondin crossed Niagara Gorge on a tightrope, turning him into one of the world's most famous tightrope walkers.
1908 – A massive explosion occurred near the Podkamennaya Tunguska River in what is now Krasnoyarsk Krai, Russia, knocking over 80 million trees (sample pictured) over 2,150 square kilometres (830 sq mi).
1922 – The United States and the Dominican Republic signed an agreement that ended the former's occupation of the latter two years later.
1972 – The International Time Bureau added the first leap second to the Coordinated Universal Time time scale.
2009 – Schoolgirl Bahia Bakari was the sole survivor when Yemenia Flight 626 crashed into the Indian Ocean killing 152 people.
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Today's featured picture
Grandidier's baobab (Adansonia grandidieri) is the biggest and most famous of Madagascar's six baobab species. It has a massive cylindrical trunk, up to 3 m (10 ft) across, and can reach up to 25 m (82 ft) in height. The large, dry fruits of the baobab contain kidney-shaped seeds within an edible pulp. It is named after the French botanist and explorer Alfred Grandidier, who documented many of the animals and plants of Madagascar.

Photo: Bernard Gagnon
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