Scientists say they used new measuring methods to confirm that cloud seeding can produce snowfall under the right conditions. Researchers used radar and other instruments to measure snowfall levels during experiments carried out in 2017 in the American state of Idaho. The experiments involved scientists from several American universities, as well as the U.S. National Center for Atmospheric Research, or NCAR. A study reporting the results was recently published in Proceedings of the National Academy of Sciences. Cloud seeding has been tested in parts of the United States since the 1940s. It involves injecting various substances into clouds to produce precipitation rain, snow or ice that falls to the ground. The process can cause ice to form and build up inside the clouds until it falls.
Title: Cloud Seeding Can Produce Snowfall
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/3944/snow.wav' data-capture-url='//staging.analytics.lingraphica.com/events/capture_news' data-article-title='Cloud Seeding Can Produce Snowfall' data-article-id='4483'><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='13354'>Scientists say they used new measuring methods to confirm that cloud seeding can produce snowfall under the right conditions.</span> <span data-start-time='13354' data-end-time='29021'>Researchers used radar and other instruments to measure snowfall levels during experiments carried out in 2017 in the American state of Idaho.</span> <span data-start-time='29021' data-end-time='44188'>The experiments involved scientists from several American universities, as well as the U.S. National Center for Atmospheric Research, or NCAR.</span> <span data-start-time='44188' data-end-time='53438'>A study reporting the results was recently published in Proceedings of the National Academy of Sciences.</span> <span data-start-time='53438' data-end-time='61500'>Cloud seeding has been tested in parts of the United States since the 1940s.</span> <span data-start-time='61500' data-end-time='74458'>It involves injecting various substances into clouds to produce precipitation rain, snow or ice that falls to the ground.</span> <span data-start-time='74458' data-end-time='81979'>The process can cause ice to form and build up inside the clouds until it falls.</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/3944/snow.jpg'/></div></div><div id='question-content' style='display:none;'><div class='vocabulary_question question-container' data-question-id=14460 data-hint-location='61500' style='display:none;'><div class='question' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3944/what_does_inject_mean.wav'>What does inject mean?</div><div class='choices' data-correct-choice='force under pressure'><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3944/design_a_cloud.wav'><span>design a cloud</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3944/cause_ice_to_form.wav'><span>cause ice to form</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3944/force_under_pressure.wav'><span>force under pressure</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3944/recently_published.wav'><span>recently published</span></div></div></div><div class='multiple_choice_question question-container' data-question-id=14461 data-hint-location='0' style='display:none;'><div class='question' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3944/what_does_the_new_method_produce.wav'>What does the new method produce?</div><div class='choices' data-correct-choice='snow'><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3944/rain.wav'><span>rain</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3944/snow.wav'><span>snow</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3944/ice.wav'><span>ice</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3944/radar.wav'><span>radar</span></div></div></div><div class='sentence_completion_question question-container' data-question-id=14462 data-hint-location='13354' style='display:none;'><div class='question' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3944/researchers_used_instruments_to_measure__blank_.wav'>Researchers used instruments to measure <span class='blank'>snowfall</span>.</div><div class='choices' data-correct-choice='snowfall'><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3944/cloud_cover.wav'><span>cloud cover</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3944/seed_pods.wav'><span>seed pods</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3944/snowfall.wav'><span>snowfall</span></div><div class='choice' data-sound-name='https://news-app-production.s3.amazonaws.com/articles/3944/final_amounts.wav'><span>final amounts</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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