<div id="ooyalaplayer" style="width: 800px; height: 450px;"></div><div style="display:none;" id="kalturavideoplaceholder">kalturavideoplaceholder</div><div><div><script src="https://apis.google.com/js/platform.js"></script><div class="g-ytsubscribe" data-channel="BusinessInsider" data-layout="full" data-count="default"></div></div></div><p class="embed-spacer"></p><p>British research discovered the disappearance of dinosaurs millions of years before they went extinct. Populations weren't multiplying as fast as they were dying off. What could have been the cause?</p><p><span><em>Produced by Emmanuel Ocbazghi. Original reporting by Jessica Orwig.</em></span></p><p><strong>Follow BI Video:&#xa0;</strong><a href="https://twitter.com/BI_Video" target="_blank">On&#xa0;Twitter</a>&#xa0;</p><div class="yj6qo ajU"></div>

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Something was killing off dinosaurs long before they went extinct - and it could turn popular history on its head

kalturavideoplaceholderBritish research discovered the disappearance of dinosaurs millions of years before they went extinct. Populations weren't multiplying as fast as they were dying off. What could have been the cause?Produced by Emmanuel Ocbazghi. Original reporting by Jessica Orwig.Follow BI Video:&#xa0;On&#xa0;Twitter&#xa0;

kalturavideoplaceholderBritish research discovered the disappearance of dinosaurs millions of years before they went extinct.  Populations werent multiplying as fast as they were dying off.

Something was killing off dinosaurs long before they went extinct - and it could turn popular history on its head

Emmanuel Ocbazghi,Jessica Orwig

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