Fresh water is one of the most significant resources for human activities and survival,and irrigation is among the most important uses of water.The sustainibility and performance of irrigation canals can be greatly af...
This paper argues that historians have all but ignored the study of rivers and their impact on the development of human society. Apart from a somewhat terse acknowledgment of the importance of rivers in the developmen...
The lumbosacral-canal system in birds most likely operates as a sense organ involved in the control of balanced walking and perching,but our knowledge of it is superficial.Penguins constitute interesting objects for th...