As we approach the end of the 20th century we can look back upon the achievements that have been made in a variety of human endeavours with pride. Enormous strides have been made to improve the quality of life of millions of people through the application of the scientific discoveries made during this and past centuries. The 20th century will be remembered as much for the mass exploitation of scientific discovery as for the discoveries themselves. The technological age has meant that the h...

Get your child excited about math with some maze fun. This book combines the study of math with the fun of games. Select a subtraction problem and solve it, then check your answer with the math maze. Explore the maze to arrive at the answer.Easily navigate the links to the math maze and answer. Then return to the practice problems to select another. Twenty problems in all, each with an answer maze. Most appropriate for 3rd grade students.

Investigating the planet's biomes and examining the modern threats to each ecosystem, this interactive series challenges young readers to look at how their own actions affect the planet's health. With compare-and-contrast facts and vocabulary-building sidebars, each engaging guide reveals how environmental threats—both human and natural—affect plants and animals.Detailing the largest biome, this guide surveys the environmental threats to the earth's oceans. Teaching students about coral re...

Bluetongue may be described as an acute insect borne disease of ruminants, manifested clinically in sheep by a catarrhal inflammation of the mucous mem branes of the digestive and respiratory systems and associated with degenerative changes in the skeletal musculature. The profound emaciation and weakness which follow the acute disease are responsible for a protracted convalescence and for serious economic losses due to diminished productivity. II. Historical During the early colonisation ...

The last 15 years has seen an explosion of studies that use cognitive science to understand theatre, whilst at the same time theatre-makers are using their artistic practice to address research question. This book looks at the current discourse around these emerging fields.

Analysis of reliability and risk is an important and integral part of planning, construction and operation of all technical systems. To be able to perform such analyses systematically and scientifically, there is usually a need for special methods and models. This book presents the most important of these. Particular emphasis has been placed on the ideas and the motivation for the use of the various methods and models. It has been an objective to compile a book which provides practising en...

The articles and short communications in this volume are based on papers pre sented to the Symposium on Cerebral Hypoxia and Stroke held in Budapest in August of 1987. Besides participants at the meeting, three scientists who were invited but could not attend have also contributed chapters to this volume. A synopsis of the general discussion at the conference and a review chapter conclude this volume. To the readers of this book it will not be news that stroke is a worldwide problem. Effor...

There is probably nothing else better to do some coloring on than the ocean and all the things found in it. This coloring book presents the underwater world and its wonderful life down there. Your babies and toddlers will have a sweet time experimenting on hues as they go deep into the blue ocean. Get your copy now!

It is generally agreed that animal life originated in the sea and that adaptive radiation subsequently led to the colonisaHon of other environments - shores and estuaries, streams and lakes, bog, mountain and desert. In their invasion of these habitats animals left the equable, relatively stabl.e surroundings of the open sea and subjected themselves to the rigours of temperature fluctuations and extremes, a variety of ionic backgrounds, areas of depleted oxygen or the possibility of aerial...

The present scientific and technical revolution has brought science into the range of the most effective forces of production. The formula "science= production force" applies also to the social sciences whose explorations of human relationships and drives have reached previously unsuspected depths. Objectives, such as higher living standards and full employment, economic growth and stability, social equity and security, have both called for and provided a basis for the exploitation of poss...

Go back in time with this dino-mite book of fun facts about fossils, pterodactyls, the T. rex, and more!Did you know that the Tyrannosaurus rex was up to forty-two feet in length?How about that the Triceratops had between 400 and 800 teeth?Or that some scientists believe that chickens are descendants of dinosaurs?Filled with tons of cool facts about dinsoaurs, plus colorful, humorous illustrations, this book...

Radiowave Propagation in Communications was written with two basic objec tives: (l) to present an up-to-date review of the major radiowave propagation phenomena which hinder reliable space communications, and (2) to describe how these propagation phenomena affect the design and performance of satellite communications systems. Earth-orbiting satellites are employed extensively for the relay of information in a vast array of telecommunications, meteorological, government, and sci entific app...