Books in 21st Century Science series

"21st-century science" is a buzz phrase in curriculum development, particularly at KS4/GCSE level. This series, which is also appropriate for KS3, looks at some of the new directions science is taking, at the interface between science and technology, and also discusses the social repercussions involved. GENETICS covers the science of genetics - what it is and how it will impact on our lives in the future in various areas, such as medicine, crime-fighting and farming. It includes DNA, the human genome project, the growth of replacement body parts, and covers the ethical issues involved. NEW MATERIALS investigates how the use of materials developed in the latter half of the 20th century - mainly for the space programme - will affect us as this century progresses. Included are strong and flexible materials such as Mylar, Lexan and Teflon and superstrength metals such as titanium.

Roget's 21st Century Thesaurus enables users to learn and make sense of words in a way no other thesaurus does, with: •17,000 main words, alphabetically listed, with parts of speech and concise definitions, for convenient, at-a-glance decision making.•450,000 synonyms, more than any other thesaurus•A versatile, thorough compilation of words and phrases - from slang to common usage - to the most erudite of word choices.•Hundreds of recently coined and common Americanisms•A unique Concept Index to find words with only one concept in mind, rather than a specific word. This process of linking words together mirrors the way we actually think.With its innovative Concept Index, this thesaurus enhances the traditional function of thesauri; the simple replacement of one word with another. The Concept Index enriches users' understanding of meaning and usage by grouping together main entry words that share a similar idea or property - achieving broad connections of language between such categories as: ACTIONS, CAUSES, LIFE FORMS, QUALITIES, SENSES, etc.The essential reference for the 21st century, this is the most up-to-the-minute thesaurus of American English today. students, professionals and general users will love its easy-to-use dictionary format and will find its reliable, accurate word choices indispensable.

Combining scholarly authority with a new awareness of today's communication demands, Roget's 21st Century Thesaurus is the simple, reliable way to find the perfect word for your needs. It features as easy-to-use dictionary format plus a revolutionary concept index that arranges words by idea, thus enhancing the user's process of association, and leading scores of additional selections. The inclusion of a wide spectrum of words and phrases with each entry -- from sophisticated choices to completely new vocabulary in the language -- brings the user an exceptional number of alternatives to fit any variation of style and tone. Created by a leading expert in linguists and lexicography with today's communication needs in mind. More word choices than any other thesaurus -- Over 1 million words! Concise definitions for each main entry. A revolutionary concept index -- arranged by idea, it mirrors the way we actually think! No obsolete terms -- all synonyms reflect modern usage.

Roget's 21st Century Thesaurus enables users to learn and make sense of words in a way no other thesaurus does, with: •17,000 main words, alphabetically listed, with parts of speech and concise definitions, for convenient, at-a-glance decision making.•450,000 synonyms, more than any other thesaurusA versatile, thorough compilation of words and phrases - from slang to common usage - to the most erudite of word choices.•Hundreds of recently coined and common Americanisms•A unique Concept Index to find words with only one concept in mind, rather than a specific word. This process of linking words together mirrors the way we actually think.With its innovative Concept Index, this thesaurus enhances the traditional function of thesauri; the simple replacement of one word with another. The Concept Index enriches users' understanding of meaning and usage by grouping together main entry words that share a similar idea or property - achieving broad connections of language between such categories as: ACTIONS, CAUSES, LIFE FORMS, QUALITIES, SENSES, etc.The essential reference for the 21st century, this is the most up-to-the-minute thesaurus of American English today. students, professionals and general users will love its easy-to-use dictionary format and will find its reliable, accurate word choices indispensable.