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Explains that scientists (geologists) divide Earth’s timeline into eras based on evidence from rocks and fossils, including the Precambrian, Paleozoic, Mesozoic, and Cenozoic. 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This evidence helps them estimate Earth’s age.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What are BYA and MYA?",{"text":117,"@type":113},"BYA means “billion years ago,” and MYA means “million years ago.” They are used to label points on the timeline of geological time.",{"name":119,"@type":110,"acceptedAnswer":120},"Which eras are described in the book’s chart?",{"text":121,"@type":113},"The chart covers major periods such as the Precambrian, Paleozoic, Mesozoic, and Cenozoic, describing key characteristics for each era.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},567484,1792438745,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":14,"category_name":15,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":81,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":36,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":144},24464137899374,"https://us-avatar.wpscdn.com/davatar_3d24733baf745e90a7e4bdd5f77d97b2","THE STORY BEHIND  \nME  \n■  \nTHE STORY BEHIND  \nTIME  \nElizabeth Raum  \nwww.heinemannlibrary.co.ukTo order:  \nVisit our website to find out moreinformation about HeinemannLibrary books.  \nHeinemann Library is an imprint of Capstone GlobalLibrary Limited,a company incorporated in Englandand Wales having its registered office at 7 Pilgrim Street,London,EC4V 6LB-Registered company number:6695582  \n\"Heinemann\"is a registered trademark of PearsonEducation Limited,under licence to Capstone GlobalLibrary Limited.  \nText ◎ Capstone Global Library Limited 2009First published in hardback in 2009The moral rights of the proprietor have been asserted.  \nAll rights reserved.No part of this publication may bereproduced in any form or by any means(includingphotocopying or storing it in any medium by electronicmeans and whether or not transiently or incidentally tosome other use of this publication)without the writtenpermission of the copyright owner,except in accordancewith the provisions of the Copyright,Designs and PatentsAct 1988 or under the terms of a licence issued by theCopyright Licensing Agency,Saffron House,6-10 KirbyStreet,London ECIN 8TS(www.cla.co.uk).Applicationsfor the copyright owner's written pernission should beaddressed to the publisher.  \nEdited by Louise Galpine,Megan Cotugno,and Laura Knowles  \nDesigned by Philippa Jenkins and ArtistixOriginalillustrations @Capstone Global Library LtdIllustrated by Geoff Ward  \nPicture research by Mica Brancic and Elaine WillisOriginated by Modern Age Repro House Ltd.Printed in China by CTPS  \nISBN 9780431114897(hardback)131211100910987654321  \nBritish Library Cataloguing in Publication DataRaum,Elizabeth  \nThe story behind time.-(True stories)529.7  \nA full catalogue record for this book is available from theBritish Library  \nPhone+44(0)1865888066Fax+44(0)1865314091Visit www.heinemannlibrary.co.uk  \nAcknowledgements  \nWe would like to thank the following for permission toreproduce photographs:Corbis pp.4(C Louie Psihoyos),14(◎ JJamArt),15(◎ Bettmann),21(C John Heseltine),22(Brand X/◎ Colin Anderson),23(C Reuters)25-26(◎ Bettmann);◎ DK Images p.19;Getty Images pp.6(Collection Mix:Subjects/Code Red),7(Taxi/Bill Losh),8(Riser/@B2M Productions),9(O Science Faction/YoavLevy),10(⑨Patricio Robles Gil/Sierra Madre/MindenPictures),16(Stone/Hugh Sitton),18(◎ Three Lions),27(AFP/O John MacDougall);◎ Mary Evans PictureLibrary 2008 p.17;◎Photolibrary.com p.13(ImagestateRM/Pictor);Shutterstock pp.iii(C stocksnapp),12(◎Tamara Kulikova);The Bridgeman Art Library p.24(◎Bildarchiv Steffens).  \nCover photograph of the inner works of a watchreproduced with permission of Getty Images (Stockbyte/◎ John Foxx).  \nEvery effort has been made to contact copyright holders ofany material reproduced in this book.Any omissions willbe rectified in subsequent printings if notice is given to thepublisher.  \nAll the Internet addresses(URLs)given in this book werevalid at the time of going to press.However,due to thedynamic nature of the Internet,some addresses may havechanged,or sites may have changed or ceased to exist sincepublication.While the author and Publishers regret anyinconvenience this may cause readers,no responsibility forany such changes can be accepted by either the author orthe publishers.  \nContents  \n■ The beginning of time……………………4  \nBiological clocks …………………………………6  \nA short history of time…………………12  \n■ World time………  \n…………………20  \n□ Time travel..  \n…………………24  \nTimeline..  \n…………………28  \n□ Glossary ………  \n…………………30  \nFind out more  \n……………………………31  \nIndex…………………  \n……………………32  \nSome words are shown in bold,like this.  \nYou can find out what they mean by  \nlooking in the glossary.  \n▲This geologist learnsabout Earth’s past bymeasuring dinosaurfootprints high in theAndes Mountainsof Argentina.  \nTime is a way to measure the past,the present,andthe future.We can tell day from night,winter fromsummer,and young from old.Most people know theirexact age.But how do we know the age of Earth itself?  \nHow old is Earth","cbCaiaN8b7vOT9hU","https://ap.wps.com/l/cbCaiaN8b7vOT9hU","pdf",3408259,"English","# The beginning of time\n## Biological clocks\n## A short history of time\n## World time\n## Time travel\n## Timeline\n## Glossary\n# Find out more\n## Index","[{\"question\":\"How do scientists know Earth’s age?\",\"answer\":\"Scientists called geologists study rocks and fossils to divide Earth’s history into eras. This evidence helps them estimate Earth’s age.\"},{\"question\":\"What are BYA and MYA?\",\"answer\":\"BYA means “billion years ago,” and MYA means “million years ago.” They are used to label points on the timeline of geological time.\"},{\"question\":\"Which eras are described in the book’s chart?\",\"answer\":\"The chart covers major periods such as the Precambrian, Paleozoic, Mesozoic, and Cenozoic, describing key characteristics for each era.\"}]","The Story Behind Time - The Story Behind Time | PDF",1791866593,62]