Sleep Sleep is part of a person’s daily activity cycle. There are several different stages of sleep, and they too occur in cycles. If you are an average sleeper, …
Bacteria Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a thousandth of …
Fold Cultures A folk culture is a small isolated, cohesive, conservative, nearly self- sufficient group that is homogeneous in custom and race with a strong family or clan structure …
यमुना-वर्णन Yamuna Varnan तरनि तनूजा तट तमाल तरुवर बहु छाये। झुके कूल सों जल-परसन हित मनहु सुहाये॥ किधौं मुकुर मैं लखत उझकि सब निज-निज सोभा। कै प्रनवत जल …
Vision Human vision like that of other primates has evolved in an arboreal environment. In the dense complex world of a tropical forest, it is more important to see …
गंगा-वर्णन Ganga Varnan नव उज्ज्वल जलधार हार हीरक सी सोहति। बिच-बिच छहरति बूंद मध्य मुक्ता मनि पोहति॥ लोल लहर लहि पवन एक पै इक इम आवत । जिमि नर-गन …
The source of Energy A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun;in fact, at the Sun’s very …
Obtaining fresh water from icebergs The concept of obtaining fresh water from icebergs that are towed to populated areas and arid regions of the world was once treated as …
