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Posted by duddy   December 15, 2016   8156 views

Opals (shown above) are is a hydrated amorphous form of silica (SiO2·nH2O); its water content may range from 3 to 21% by weight, but is usually between 6 and 10%. Because of its amorphous character, it is classed as a mineraloid, unlike crystalline forms of silica, which are classed as minerals. It is deposited at a relatively low temperature and may occur in the fissures of almost any kind of rock, being most commonly found with limonite, sandstone, rhyolite, marl, and basalt. Opal is the national gemstone of Australia.

The internal structure of precious opal makes it diffract light. Depending on the conditions in which it formed, it can take on many colors. The one pictured on the left is called the "Virgin Rainbow" opal, being the finest [ ... ]
Australia Opal Rocks Earth colorful colors
Posted in Interesting Facts
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Posted by duddy   December 8, 2016   9756 views

It doesn't take a genius to recognize the vast number of contributions the people of Jewish ancestry have made in modern history. According to a 2005 scientific paper, "Natural History of Jewish Intelligence", Jews as a group inherit higher verbal and mathematical intelligence than other ethnic groups, on the basis of inherited diseases and the peculiar economic situation of Jews in the Middle Ages. Specifically, the Ashkenazi Jews - those who originated in Eastern Europe, such as Albert Einstein (left) and Carl Sagan (right) - tend to have higher intelligence than other ethnic groups; in fact, about 80% of modern Jews have Ashkenazi ancestry.

One observational basis for inferring that Jews have high intelligence is their prevalence in occup [ ... ]
jewish ancestory intelligence people group scientists einstein sagan
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Posted by duddy   December 5, 2016   7641 views

Early birds and night owls have radically different daily habits. But a new study suggests they both share one trait: As the clock ticks, their decisions get dicey. Neuroscientists examined the quality of moves in more than 1 million games of chess in an online database. They charted the decisions of 99 prolific players by gauging the time they took for each move and its usefulness in leading to a victory - factors that impact games like high-speed tiebreakers in the World Chess Championships.

As expected, early risers played more games in the morning, whereas night owls were active at dusk and beyond. But both sets of players took longer for each move and made better game choices early in the day and soon after they woke up. Come evening, [ ... ]
study chess options choice
Posted in Research
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Posted by duddy   December 5, 2016   5120 views

Christmas Island is a unique natural habitat located in the Indian Ocean with many endemic species. The national park covers two-thirds of the island, which has been referred to as the Galapagos of the Indian Ocean.

Many people are aware of the red crabs whose mass migration to the sea has been described as one of the wonders of the natural world. Christmas Island has many other species of crabs, including the impressive robber crabs (Gecarcoidea natalis). These may be the largest land-dwelling arthropod on Earth.

Together these abundant land crabs clear the forests of leaf litter and maintain burrows that prevent soil becoming compacted, creating an open and diverse forest.

This thriving natural system, however, was disrupted by an invasive [ ... ]
island environment crabs video
Posted in Videos
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Posted by duddy   November 15, 2016   7371 views

The Panjin Red Beach lies on the Shuangtaizi River estuary, just outside of Panjin City, China. The river isn’t your typical freshwater river. The water has a high saline content and very high alkaline levels. Typically, this leads to plants being unable to grow in the water or on the shore. However, there is a very special plant that has adapted to the conditions of the river and thrives in this environment.

Suaeda (also known as seablite), is a kind of succulent that only grows in the type of habitat found along the river. Like a lot of plants, the suaeda changes with the seasons. During the spring and summer months, the seablite is a typical green color. In the fall, it turns this deep bright red color as far as the eye can see.

Tourist ve [ ... ]
china marsh color
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nice pc
Posted on Nov 18, 2016 by thevoicexxx

How can birds survive with these water contains two chemicals?

Are they biologically adapted to drinking that water?

I'm just curious.
Posted on Nov 19, 2016 by Kekek
Seabirds can drink salt water just fine, so I'm certain there are animals adapted to these conditions there too. The salt they take in is absorbed and moves through their blood stream into a pair of salt glands above their eyes. The densely salty flu [ ... ]
Posted on Nov 24, 2016 by duddy
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