Micrometeorites are Falling

Now for something completely different, from studies of mine long ago.   Did you know that there is a near continuous shower of space dust falling down on us?  Tiny cosmic meteorites.  And there are simple means of gathering some of these?  We used analytic methods to determine their nature and type.  Some of my earliest ML-style efforts.   Saw this repeated in a recent documentary:  Fireball by Werner Herzog.  Here supporting information.  The first more technical, the second a paywalled but more accessible NYT article.

https://pubs.geoscienceworld.org/gsa/geology/article/45/2/119/195213/An-urban-collection-of-modern-day-large

https://www.nytimes.com/2017/03/10/science/space-dust-on-earth.html