Articles about research
Tree Rings: A Timeline To HistoryA tree grows at different rates. In the spring and summer it grows more, and bands are light and wide. Growth slows in autumn, and during winter, it goes dormant and leaves a dark narrow ring. These tree rings provide a record of the past. The light and dark rings are a timeline to history. Climate Tree rings are a rainfall record during a year. During a wet year, a tree grows more, and makes the rings wider and light-colored. Years that have cool summer temperatures produce denser wood. This makes the light-colored bands of wood thinner. A researcher can tell what the areaâ€™s climate was like hundreds of years ago by the thickness and density of the tree rings. Trees that grow in the same climate develop matching thick and thin ring patterns. Other Climate Factors Other factors influence tree growth. The soil properties, wind, sun and location of the tree on a slope will affect growth rings. By noting the location and the climate influences on the tree, it is used to identify trees grown in similar conditions.[read the rest]
Have a headache? The solution may be easier than one thinks. Take a drink of municipal water. Contaminated Water During the past few years, studies have revealed unwanted additives in the drinking water supply. These include recreational drugs, hormones and pharmaceuticals. These components are not...
This article is about the psychological profile of Adolf Hitler by Dr. Walter C. Langer. He did this for the O.S.S. in 1943.