{"version":"1.0","type":"rich","provider_name":"Acast","provider_url":"https://acast.com","height":250,"width":700,"html":"<iframe src=\"https://embed.acast.com/$/5e8c01ee8a841bc45facf77c/5e8c03afef0e132824719379?\" frameBorder=\"0\" width=\"700\" height=\"250\"></iframe>","title":"What was the Tunguska event?","description":"<p>In 1908, the most powerful meteoroid explosion in recorded history happened over a remote area of Siberia. But the weird thing is there was no impact crater and no asteroid to be found – so was it an asteroid? (Yes.)</p><p> </p> Learn more about your ad-choices at <a href=\"https://news.iheart.com/podcast-advertisers\">https://news.iheart.com/podcast-advertisers</a>","author_name":"iHeartRadio"}