Eugenics [a ] is a set of largely discredited beliefs and practices that aim to improve the genetic quality of a human population. [2 ] [3 ] [4 ] Historically, eugenicists have attempted to alter the frequency of various human phenotypes by…
The Wright brothers were the first to fly in a powered and controlled aircraft. Previous flights were gliders (control but no power) or free flight (power but no control), but the Wright brothers combined both, setting the new standard in…