Why might it be a problem if someone has an infectious disease and seeks treatment receives an ineffective treatment? Is this something you worry about locally or globally? Why or why not?
Some biologists argue that human evolution as a result of natural selection on our physical traits has nearly stopped because of our ability to use technology to compensate for poor environmental conditions or to overcome of physical handicaps. What examples can you give that support this view? In what ways might humans still be subject to natural selection?