The Tunguska Event
You have to wonder when a large piece of space rock will hit somewhere inhabited. That said, with 3% of earth&#x27;s land being urban (3% of 29% of Earth), and reasonably infrequent falling rocks, it&#x27;s really not that likely to happen in any given lifetime. I suspect we&#x27;re keen enough these days to be able to predict and evacuate the right areas, though. This paper references another that suggests a &quot;Tunguska Event&quot; is a once in 200-300 year deal:
<a href="http:&#x2F;&#x2F;articles.adsabs.harvard.edu&#x2F;&#x2F;full&#x2F;1994Metic..29..864Y&#x2F;0000868.000.html" rel="nofollow">http:&#x2F;&#x2F;articles.adsabs.harvard.edu&#x2F;&#x2F;full&#x2F;1994Metic..29..864Y...</a>
(Man I am so far into the rabbit hole now)<p>Looks like 15th century China had an event that probably had a number of casualties (though apparently modern researchers dispute the details). Wasn&#x27;t aware of that.
<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;1490_Ch'ing-yang_event" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;1490_Ch'ing-yang_event</a>