... PAHs (polycyclic aromatic hydrocarbons) and small germ-like bodies that could be fossilized microbes, says David McKay, of NASA. The carbonites especially hint that water once was present. It was McKay's team that was responsible for uncovering the life-like evidence from the meteorite and stunned the world of science with ... fundamentally hostile to life because of the peroxides, and intense ultra-violet radiation from the sun, life beneath the soil may still be possible. The meteorite found in Antarctica seems to have come from deep beneath Mars' surface. At the same time that these e...

• Word Count: 1774
• Approx Pages: 7
• Has Bibliography
• Grade Level: High School

In today's society the environment is a big problem. There are lots of types of pollutions today other than just air. Here are some just to name a few: home, air, water, ground, noise and radiation. It's about time we do something about it! Air pollution occurs when wastes dirty the air. People produce most of the wastes that cause air pollution. ... . Natural pollutants include dust, pollen, soil particles, and naturally occurring gases. Water pollution is one of the most serious environmental problems. It occurs when water is contaminated by such substances as human and other animal wastes,...

• Word Count: 316
• Approx Pages: 1
• Grade Level: High School

As I walk along the never ending shore, I can feel the soft smooth sand beneath my tired out feet, giving them a massage. The soothing atmosphere takes me into a world of peace. This beach is a cure to all my problems. All my worries ... I give up. I can no longer fight the harsh rays of the sun on a now scorching summer day. I run as fast as I can towards an endless pool of crystal blue water. A pool that my body sees as a cool heaven. I am refreshed as I peacefully float among the merging waves. I am unaware of the waves that are soon to break over ... the beach. I quickly find myself once...

• Word Count: 600
• Approx Pages: 2
• Grade Level: High School

... a subject of wide interest because it is commonly believed to be a prerequisite for extraterrestrial life. Many scientists infer that liquid water once covered large areas of Venus and Mars. Water is thought to exist as liquid beneath the surface of planetary bodies, similarly to groundwater on Earth. Evidence suggests the existence of liquids below the surface of several moons and dwarf planets ... elsewhere in the solar system. Some are suspected to be large oceans, and there is a growing list of candidates to host liquid water. Water has been very important ... locked, with one hemi...

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

... so to understand mirages, you first have to understand refraction in the atmosphere. The air near sea level is about a thousand times less dense than water; but that's still enough to change the direction of light rays that enter it from a different medium, such as the nearly empty space outside our ... is overhead, additional phenomena can occur because rays can penetrate far beyond it. The superior mirage is not as commonly recognized as the familiar highway "water pools" of the inferior mirage. And yet, if you have ever watched the sun rise or set across the horizon, you have seen on...

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... . There is no evidence of volcanic activity on the planet Mars. There lots of erosion and small floods that happen on Mars. There is other possibilities of other fluids besides water on planet Mars . The age of erosion channels is estimated to be about nearly 4 billion years. Doing to Mar's plate tectonics it is not able to recycle any of this ... earth would be at that distance of the sun. It has a thin atmosphere composed of tiny amount of Carbon dioxide 95.3% plus nitrogen 2.7%, argon 1.6 %, and traces of oxygen .15 % and water .03 %. The average surface pressure on the surface of Mar...

• Word Count: 516
• Approx Pages: 2
• Grade Level: High School

... they have been away from civilization for to long but Diana doesn't know any better because she was born after all the destruction. Mean while beneath the ground, hidden away from the rest of the world lives Hector? He lives in an underground town set up by a crazy control-freak ... warming the planet up at an alarming rate. With the warming of the planet comes the melting of the ice caps and that raise's the water levels around the world. Although this is happening slowly, already 10 pacific islands have been lost and the natives have had to move of there ... are casting in on this p...

• Word Count: 1334
• Approx Pages: 5
• Grade Level: High School

... The moisture clings to my skin and hair. The wind blows my damp hair into my face, refreshing me with every gust. The salty smell of the ocean water and the dank seaweed hang in the air as if it were something I could touch. As I watch the red sun sink smoothly into the ocean, various ... shore plays a virtual symphony for the mind. In the sky above, a seagull is crying in a strident calling, but even this sound is not discordant. The salty water is cool, but not cold, as it swirls around my ankles. The shore is peppered with small, round stones that have been pounded smooth by the tide....

• Word Count: 618
• Approx Pages: 2
• Grade Level: High School

... The moisture clings to my skin and hair. The wind blows my damp hair into my face, refreshing me with every gust. The salty smell of the ocean water and the dank seaweed hang in the air as if it were something I could touch. As I watch the red sun sink smoothly into the ocean, various ... shore plays a virtual symphony for the mind. In the sky above, a seagull is crying in a strident calling, but even this sound is not discordant. The salty water is cool, but not cold, as it swirls around my ankles. The shore is peppered with small, round stones that have been pounded smooth by the tide....

• Word Count: 618
• Approx Pages: 2
• Grade Level: High School

... , the beach is the ultimate cure to all of my problems. While I am there, all of my obligations are suddenly erased. As I stroll along I can feel the soft smooth sand beneath my feet. I am taken in by the soothing atmosphere that encircles me. I close my eyes, letting myself absorb the blistering rays of the sun on a scorching summer day. I am comforted ... harsh rays of the blistering summer sun. I run as fast as my feet can carry me toward what my body sees as Utopia, a seemingly endless pool of crystal blue water. I dive into the crashing waves head first. The shock of the frigid wate...

• Word Count: 584
• Approx Pages: 2
• Grade Level: High School

... the sun, great dust storms appear as yellow clouds. The largest of these storms can cover the globe of Mars and last for months. At other times white clouds of water vapor are visible. Scientists now believe that the canals people observed on Mars during the 19th century are actually another optical illusion, caused by the tendency to draw connections between ... the structure of the gravity field. From that data scientists can learn some things about density in different parts of the planet. Mars is thought to have a relatively thick crust. Beneath the Tharsis bulge, an area of volcani...

• Word Count: 1211
• Approx Pages: 5
• Grade Level: High School