Yuk!!

I'm sure most of us have heard about "invasive species" and what the consequences are. There's a whole body of publications about what Europeans brought with them to the Americas and what the consequences were, ranging from deadly communicable diseases to plants and animals, like the horse. There was an exchange flowing in the other direction, too, things like tobacco, supposedly syphilis, and all sorts of foodstuffs like corn and potatoes.

But did you know that invasions are still happening?  There's the Asian carp that is overtaking our streams and lakes, for example, but did you know we are being taken over by "rock snot"? Creeeeeepy!