Is there any substantive difference between natural, sexual, and artificial selection? Or is it just semantic sugar, useful for humans in our own cognitive bookkeeping? I lean toward the latter proposition. To some extent I would think that this is an irrelevant issue, selection is selection, but I have encountered folks who seem surprised at analogies between “artificial” and “natural” selection quite regularly. Of course Charles Darwin famously elided the distinctions across the two categories in his original works in the 19th century (this was later a subject of controversy, insofar as Darwin’s conflation of the properties of artificial and natural selection may have misled him in terms of the weight of factors shaping evolution in the wild).
These are the questions which bubble to the fore of my mind when I encounter reports such as Elizabeth Pennisi’s in Science, On the Trail of Brain Domestication Genes:
Researchers have proposed that bonobos evolved domesticated behavior to encourage group living. By isolating a group of 40 putative brain domestication genes in the prefrontal cortex and comparing their expression in humans versus chimps and bonobos, researchers found that the activity of that gene group in bonobos was clearly “domesticated” compared with chimps, they ...
When particle physicists say “vacuum,” they don’t mean “empty space,” they mean “a state of a theory that has the lowest energy of all similar-looking states.” So let’s say you have some scalar field filling the universe that can take on different values, and each different value has a different potential energy associated with it. In the course of normal evolution the field wants to settle down to a minimum of its potential energy — that’s a “vacuum.” But there can be the “true vacuum,” where the energy is really the lowest, and all sorts of “false vacua,” where you’re in a local minimum but not really a global minimum.


What’s the News: A modified 
In Alice’s Adventures in Wonderland, the titular heroine quaffs a potion that shrinks her down to the size of a doll, and eats a cake that makes her grow to gigantic proportions. Such magic doesn’t exist outside of Lewis Carroll’s imagination, but there are certainly ways of making people think that they have changed in size.





Keith's note: More photos have been added. I wonder why they never tried to take shots like this before!
Keith's note: According to the 
