Q:

Is political correctness applied to science terms something usual in the US? 

This Wikipedia article on Master/Slave as defined in technology also include the following:

In 2003, the County of Los Angeles in California asked that
  manufacturers, suppliers and contractors stop using "master" and
  "slave" terminology on products; the county made this request "based
  on the cultural diversity and sensitivity of Los Angeles County". 

To me this looks like political correctness ("used to describe language, policies, or measures that are intended to avoid offense or disadvantage to members of particular groups in society") applied to scientific terms.  
I am wondering if this is an isolated case or it has become more frequent in the last decades in US. 
Question: Is political correctness applied to science terms something usual in the US? 
Important note: this question is not about whether political correctness should be applied in science or not (which is very debatable).  I am just interested if this is something rather exceptional or not in the US.  This is particularly interesting for me, because where I live this is something unheard of (actually most scientific terms are directly borrowed from English). 

A:

It sometimes happens with hot button topics.  See for instance race, where  terms such as "negro" or "mulatto" went into disuse in scientific publications and public discourse.  Or in climate science, where you find terms like climate change, global warming, climate crisis, or global heating -- the choice of words matters. 
There is also a hilarious episode that involved lawmakers rather than changing public attitudes: the Indiana Pi Bill.  In 1897 the Indiana House of Representives passed a bill written by a crank that effectively set Pi's value to 3.2 and the square root of 2's value to 10/7. ( The bill failed in the Senate.) 
Not related to political correctness either, but interesting regardless, California's Proposition 65 might also catch your interest.  It requires to warning consumers over the flimsiest cancer risks, and made some headlines a few months ago over coffee.