We can't read Nye's "Famous" without feeling like she is reminding us that we should care less about the most recent celebrity divorce and more about how we could be helping the elderly widow across the street. On the other hand, it isn't as though Nye is scolding us. She's just gently reminding us that we can do a lot by doing just a little. Gee, maybe we should finally do that volunteer work for Habitat for Humanity we've been promising to do.
Humans are made famous by doing what they can, which primarily means being kind and good to one another.
Being ethical means fulfilling your function—the way that a pulley or a buttonhole does.