After completing a 200 million dollar study, NASA reported that a colony could be dug several feet below the moon's surface to protect residents from high energy cosmic radiation, which can damage DNA and cause cancer. ... There are many restrictions for living on other planets, so many people are questioning whether it is worth trying to find another Earth. ... The thin atmosphere provides no protection to ultraviolet light, which is lethal to living things. Recently, Mars Express Orbiter detected methane in the atmosphere, which is usually produced by living things, but can also be for...

• Word Count: 1498
• Approx Pages: 6
• Has Bibliography
• Grade Level: Undergraduate

Volcanoes Volcanic eruption occurs when magma is formed below the earth's surface and begins to rise. The collision of tectonic plates below the surface cause friction which generates enough heat to melt the earth's crust and form hot magma. ... Surface Ocean Fertilization In the ocean iron is essential for multiple living organisms in the production of chlorophyll and photosynthesis. ...

• Word Count: 1140
• Approx Pages: 5
• Has Bibliography
• Grade Level: Undergraduate

In that context, economy would include not only financial exchanges, but also a range of social and environmental transactions people undertake to make a living. ... Power plant and automotive emissions create widespread air pollution; in a number of the world's largest cities, the air quality is frequently below international health standards. ...

• Word Count: 780
• Approx Pages: 3
• Grade Level: Undergraduate

The geoglyphs are formed when gravel with an oxidized surface, which covers the land, is removed to expose the light soil below.... These Nazca Lines have always been cultural significant to the people living in that area and certainly not for any extraterrestrial life. ...

• Word Count: 1683
• Approx Pages: 7
• Has Bibliography
• Grade Level: Undergraduate

Confirmation of 20th-century global warming is further substantiated by melting glaciers, decreased snow cover in the northern hemisphere and even warming below ground. ... Climate change may alter the world's habitats and ecosystems - all living things are included in and rely on these places. ... A rapid change in climate could upset this balance and seriously endanger many living things. ... People living in these places may have a chance to grow crops in new areas. ...

• Word Count: 3240
• Approx Pages: 13
• Grade Level: Undergraduate

The IMF provided long and short-term loans at below market interest rates for countries in all sorts of economic difficulty (Milner 2005, p.9). ... In addition, poverty continues to prevail, with an estimate of 20% of the world's population living on less than a dollar a day, and more than 45% on less than two dollars a day (Ravaillon 2005, table 2). ...

• Word Count: 3351
• Approx Pages: 13
• Has Bibliography
• Grade Level: Undergraduate