On: Earth's mountains form in millions of years, Moon ...

[wahern]

Another cool fact: IIRC, the heat was so intense it basically incinerated all flora and fauna across distances that effectively encompassed most of the Americas. The rest of the planet burned more slowly, relatively speaking, as material fell back from outer space and forests burned in a planet-wide conflagration.

[rraghur → wahern]

If you liked that, also listen to radiolabs 'dinopocalypse'. it's on YouTube as well.

Another interesting fact, some of the ejecta from that impact went as far as the moon!