Essay Database

Fuel cell technology in cars is a new and upcoming technology emerging in society today. Currently, the only application in which it is being used is in the NASA space program. The fuel cell works by converting chemical energy into electrical…

water carried by the world rivers freshwater resources as a proportion of the earths water Water Use In Different Countries Water Scarcity The amount of water we use in our homes varies during the day How to use water more efficiently …

process in northern Rocky Mountain forests is widely recognized (e.g., Habeck and Mutch 1973; Wright and Heinselman 1973; Arno 1980; Wadleigh and Jenkins 1996; Barrett et al. 1997; Murray et al. 1998). At a landscape scale, periodic fire partitions…

wave in Chicago, Ill. in July 1995 hovered around 100° Fahrenheit. High levels of humidity made the air feel even hotter, creating an almost unbearable and, ultimately, fatal environment. A total of 566 deaths were attributed to the heat, which struck…

Clinton Administration directly issued several new rules to affect the National Forest System (NFS). The most controversial of these rules pertains to 'roadless areas' of the NFS. Commonly known as the Roadless Areas Initiative, it restricts road buildin…

the night of May 6, 1937, the true face of hydrogen power was shown in the Hindenburg. The use of hydrogen to lift the massive airship was great, until the fatal collision, followed by the even greater flames that rained down from the exploding mass…

into several layers. The lowest region, the troposphere, extends from the Earth's surface up to about 10 kilometers (km) in altitude. The next layer, the stratosphere, continues from 10 km to about 50 km. Most atmospheric ozone is concentrated in…

are chemicals that affect flowering, aging, root growth, killing of leaves, promotion of stem elongation, color enhancement of fruit, prevention of leafing, and many other conditions. Very small concentrations of these substances produce major growth…

each day in the United States. Before this water can be drunk, it endures many unfavorable influences. The liquid that spews from our kitchen tap has been treated at a sewage treatment plant, but these plants are not designed to remove the inorganic…

with the earth. The constant and increasing pressures we are exerting threaten our planets ability to sustain life itself. Change-in the way we think , and in the way we live-is needed now. Global warming is the most urgent environmental…