By: Max Wood | Feb 28, 2012 In 1939, scientists discovered that a chemical first synthesized in 1874 was an excellent insecticide. The chemical, dichlorodiphenyltrichloroethane, is widely known as its notorious abbreviation, DDT. DDT was used with great success in the second half of World War II to combat malaria and typhus, and the chemist who discovered its insecticidal properties was awarded the Nobel Prize in 1948.
By: Stuart Owens | Feb 24, 2012 Most of us are aware that most of the desert lands do not have sufficient water. Apart from this due to the global effects water on earth is getting evaporated and rains falls have significantly decreasing. The earth is becoming hotter day by due to Ozone effects. All these have drastically reduced the water content on earth. Most of the dry land remains drier than ever.
By: Laura Hodes | Feb 24, 2012 Looking after the environment is one thing everyone really should accomplish. You can begin by considering waste management services for your house or perhaps business. It's high time all of us do something relating to this situation.
By: Richard Young | Feb 22, 2012 Mold inspection is the protocol to investigate mold in residential and commercial building. Importance of mold inspector certification is a consequence of the serious damage caused by molds to buildings and properties.
By: annphilip | Feb 16, 2012 Are you curious to know about the life cycles of a butterfly? The first stage in the life cycle of any butterfly is the egg. The egg is covered with a rigid and hard layer called chorion. The outer layer is thick and it is covered by wax to prevent it from drying. The eggs are usually spherical or oval in shape.
By: Cody Watson | Feb 13, 2012 Global warming can have some deadly effects of life on earth. It might lead to the outburst of deadly diseases.The increase in temperature would result in warmer water and stronger hurricanes.
By: Robin Mackenzie | Feb 8, 2012 I always have the belief that the animals were the kings of the earth millions and millions of years ago when the earth started. But with the increase in human civilization, the animal species started reducing. There are a lot of animals that have become extinct (end of a particular species). We cannot say that animals have become extinct just because of civilization; it is also because of the cha
By: annphilip | Feb 7, 2012 Why our surroundings are constantly getting polluted? Four major reasons for air pollution are rapid development in the cities, increasing traffic, congested roads, speedy economic development and industrialization.
By: Cody Watson | Feb 7, 2012 The ingredients used in the making of Ayurveda medicines are natural and powerful and don’t have any side effects (unlike other artificial medicines) on the health. Regular use of the ayurvedic medicines leads to a healthy long life.