The Columbian Exchange A Millions of years ago, continental drift carried the Old World and New World apart, splitting North and South America from Eurasia and Africa. That separation lasted so long that it fostered divergent evolution; for instance, the development of rattlesnakes on one side of the Atlantic and of vipers on the other. After …
Trends in the Indian fashion and textile industries During the 1950s, the Indian fashion scene was exciting, stylish and very graceful. There were no celebrity designers or models, nor were there any labels that were widely recognised. The value of a garment was judged by its style and fabric rather than by who made it. …
The Intersection of Health Sciences and Geography A While many diseases that affect humans have been eradicated due to improvements in vaccinations and the availability of healthcare, there are still areas around the world where certain health issues are more prevalent. In a world that is far more globalised than ever before, people come into contact …
Sustainable architecture – lessons from the ant Termite mounds were the inspiration for an innovative design in sustainable living Africa owes its termite mounds a lot. Trees and shrubs take root in them. Prospectors mine them, looking for specks of gold carried up by termites from hundreds of metres below. And of course, they are …
Sustainable architecture – lessons from the ant Termite mounds were the inspiration for an innovative design in sustainable living Africa owes its termite mounds a lot. Trees and shrubs take root in them. Prospectors mine them, looking for specks of gold carried up by termites from hundreds of metres below. And of course, they are …
The Concept of Role Theory Any individual in any situation occupies a role in relation to other people. The particular individual with whom one is concerned in the analysis of any situation is usually given the name of focal person. He has the focal role and can be regarded as sitting in the middle of …
The water hyacinth The water hyacinth grows in tropical countries. It has beautiful purple-blue flowers, but everybody hates it. Why? Millions and millions of these plants grow in rivers and lakes. Sometimes the plants become so thick that people can walk on them. People cannot travel in boats on the water, and they cannot fish …
Bilingualism in Children A One misguided legacy of over a hundred years of writing on bilingualism1 is that children’s . intelligence will suffer if they are bilingual. Some of the earliest research into bilingualism examined whether bilingual children were ahead or behind monolingual2 children on IQ tests. From the 1920s through to the 1960s, the tendency was …
Children’s thinking One of the most eminent of psychologists, Clark Hull, claimed that the essence of reasoning lies in the putting together of two ‘behaviour segments’ in some novel way, never actually performed before, so as to reach a goal. Two followers of Clark Hull, Howard and Tracey Kendler, devised a test for children that …
How Do Many Hearing-impaired People Talk? Hearing-impaired people cannot hear sounds well. How do they “hear” words? Many hearing-impaired people use sign language. They talk with their hands. Two hearing-impaired people can talk to each other. They both use sign language. Sometimes a person who can hear and interprets for hearing-impaired people. The person listens …
