PBS Eons has a couple good videos on both horse evolution and domestication.

Big cat. You're aware of the cheetah? Just picture that but not in Africa

Supposedly the glued on titanium is the same thing the US Army does for their small Submarines, though I'm sure they found some way to cheap out/fuck up.

I remember seeing somewhere that the "colloquial" usage is actually the original and that the scientific community is the one that changed it. I do agree that the evolution argument is stupid but it's hard to blame the non scientific populace for not knowing the distinction. The evolution denier just don't have a lot else to stand on.

The mechanism I actually the whole thing. These ones are designed for cold climates where the pipes are buried deep so they don't freeze. The valve is at the bottom so the vertical section can drain to prevent freezing