… they are very different from other mountains; they are not formed by folding and crumpling or by uplift and erosion. Instead, volcanoes are built by the accumulation of their own eruptive products lava, bombs (crusted over ash flows, and tephra (airborne…

… gem that is commonly associated with the heavens, since it is the color of the sky. It has symbolized truth, sincerity and faithfulness. The name is most probably derived from the Greek word "Sápheiros" or the Latin "Sapphirus". Gems are beautiful,…

… up in England, Luke Howard (1773-1864) attended grammar school at Burford, a village to the west of London. But Luke was more interested in the books about nature than in volumes of the Greek and Latin classics. During Luke Howard's school years,…

… Panel on Climate Change (IPCC) reports, these reports claimed to have the endorsements of 2,500 scientists, creating the "scientific consensus" that President Clinton and Vice President Gore always refer to. In the year 1995, skeptical scientists…

… convenience stores, as security guard or cramschool teachers, and the ranks of casual workers in japan are increasing.Contrary to a popular belief, this rapid rise has more to do with japan`s economic stagnation and corporate cost cutting than a…

… as a class to Gold Creek Canyon. Just off the 118 freeway one can find a protected part of land that provides a habitat for many species of plants and animals. It is just minutes away from the gridlock traffic of the 405 and the 101 freeway.…

… movements today. Today's main focus is energy and environmental concerns. Soil erosion is significant, however, for various reasons. Currently, the Mississippi River is altering it natural course due to soil deposits from the northern portion.…

… returned in the late 1700's. They formed a social class which hardly mixed with the indigenous people. After Independence in 1961 government was corrupt and controlled the trade in diamonds and the profits. Little of the profit was shared out…

… effects of CFCs and their substitutes a.CFCs - highly stable molecules, lifetime in the atmosphere of between 50 and 100 years; contain 2 or 3 chlorine atoms. b.CFCs substitutes ( transitional compounds) i.HCFCs - one or more of the chlorine…

… that occur are two slow for people to be conscious about. Awareness of the theory of evolution is quite fresh, yet we have made a lot of progress. We will start our journey through the Earth's evolutionary timeline from nearly 5 billion years ago.…