Now that is tiny impact of bad science. Want major global impact, that affected the majority of the human population and created a generation or two of stupidity, how about lead in fuel as bad science.
Bad science is idiotic lead head performance based science, science where idiots with money only want to pay for science that makes them more money and that insanely enough includes purposefully bad science.
Want good science, then you pay for people to do science and monitor the effort put in and the results are simply what they are, a relatively accurate answer to the question that was asked, the measure is how long it took to answer the question, what ever it was and how much it cost. Important salient point how many other questions were answered along the way and how many other interesting question were asked.
GREED is the most offensive word in the human language and fucks up everything it is associated with. Want a better world get rid of the high priests of greed, the ideological fundamentalist zealots who do far more harm than good in every human endeavour they corrupt and that especially includes science.