For nearly 130 years, the world’s scientists have used a singular small, metal cylinder to define the exact weight of a kilogram. But that is about to change. The cylinder was made in 1889 of platinum and iridium metals. It is called the Grand K. The International Bureau of Weights and Measures, or BIPM, keeps the object at its headquarters near Paris. Many safeguards protect the Grand K. In fact, it takes three specially chosen people to open the container that holds the cylinder. They must each release separate locks at exactly the same time to do so. The Grand K has served as the official world measurement tool for weight in kilograms. All modern mass measurements have been based on the Grand K. There are seven main units of official measure.
Title: Historic Kilogram Measure to Be Replaced
Content: <div id='article-page'><div id='article-content' data-media-url='//news-app-staging.s3.amazonaws.com' data-base-url='//news-app-staging.herokuapp.com' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2973/ececa85a-32d2-4a93-82a1-bd702e50dbd9_hq.wav' data-capture-url='//staging.analytics.lingraphica.com/events/capture_news' data-article-title='Historic Kilogram Measure to Be Replaced' data-article-id='3516'><script src='//news-app-staging.herokuapp.com/javascripts/getscripts.js'></script><link rel='stylesheet' href='//news-app-staging.herokuapp.com/stylesheets/article.css' type='text/css' /><div class='article'><p><span data-start-time='0' data-end-time='15000'>For nearly 130 years, the world’s scientists have used a singular small, metal cylinder to define the exact weight of a kilogram.</span> <span data-start-time='15000' data-end-time='19458'>But that is about to change.</span> <span data-start-time='19458' data-end-time='29750'>The cylinder was made in 1889 of platinum and iridium metals.</span> <span data-start-time='29750' data-end-time='33375'>It is called the Grand K.</span> <span data-start-time='33375' data-end-time='45229'>The International Bureau of Weights and Measures, or BIPM, keeps the object at its headquarters near Paris.</span> <span data-start-time='45229' data-end-time='50604'>Many safeguards protect the Grand K.</span> <span data-start-time='50604' data-end-time='59750'>In fact, it takes three specially chosen people to open the container that holds the cylinder.</span> <span data-start-time='59750' data-end-time='67604'>They must each release separate locks at exactly the same time to do so.</span> <span data-start-time='67604' data-end-time='76792'>The Grand K has served as the official world measurement tool for weight in kilograms.</span> <span data-start-time='76792' data-end-time='83979'>All modern mass measurements have been based on the Grand K.</span> <span data-start-time='83979' data-end-time='88604'>There are seven main units of official measure.</span> </p></div><div class='control-buttons-sticky' style='display:none;'><div class='control-buttons'><button title='Back' class='back' disabled='disabled'></button><button title='Play' class='play' disabled='disabled'></button><button title='Pause' class='pause' style='display:none;'></button><button title='Forward' class='forward' disabled='disabled'></button><button class='finished-reading' style='display:none;'>Done</button></div></div></div><div id='article-media'><div id='media-image'><img src='https://news-app-production.s3.amazonaws.com/articles/2973/6BA6303E-2391-4057-AD5E-E5DDE007D0F5_cx5_cy14_cw88_w1023_r1_s.jpg'/></div></div><div id='question-content' style='display:none;'><div class='vocabulary_question question-container' data-question-id=11959 data-hint-location='59750' style='display:none;'><div class='question' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2973/what_is_a_lock.wav'>What is a lock?</div><div class='choices' data-correct-choice='device used to close a door that requires a key to open'><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2973/device_used_to_close_a_door_that_requires_a_key_to_open.wav'><span>device used to close a door that requires a key to open</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2973/decide_on_a_course_of_action.wav'><span>decide on a course of action</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2973/dangerous.wav'><span>dangerous</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2973/defense.wav'><span>defense</span></div></div></div><div class='multiple_choice_question question-container' data-question-id=11960 data-hint-location='45229' style='display:none;'><div class='question' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2973/many_what_protect_the_grand_k.wav'>Many what protect the Grand K?</div><div class='choices' data-correct-choice='safeguards'><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2973/moats.wav'><span>moats</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2973/alarms.wav'><span>alarms</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2973/safeguards.wav'><span>safeguards</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2973/guns.wav'><span>guns</span></div></div></div><div class='sentence_completion_question question-container' data-question-id=11961 data-hint-location='83979' style='display:none;'><div class='question' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2973/there_are_seven_main_units_of_official__blank_.wav'>There are seven main units of official <span class='blank'>measure</span>.</div><div class='choices' data-correct-choice='measure'><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2973/food.wav'><span>food</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2973/presidents.wav'><span>presidents</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2973/money.wav'><span>money</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/2973/measure.wav'><span>measure</span></div></div></div><div class='question-buttons'><button class='skip-button'></button><button class='hint-button'></button><button class='speak-button'></button></div></div></div>
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