text: 1. That was the Catholic church, not scientists. We've argued the earth is not flat for thousands of years, since the ancient Greeks. 
  2. Again, see above. If it doesn't use the scientific method then it isn't science. 
  3. There was a financial interest in those studies. Nowadays studies are required to state their funding sources. Also, you don't have multiple institutions competing with claims in terms of client science. 
  4. Again, see above. Sugar industry paid off many of those studies. 
  
  You see, we can look at this mathematically. The basic theories of Anthropomorphic Climate Change have been about for approximately 50 years, and 10,000's of scientists have researched that. The likelihood that climate change IS a hoax and hasn't had someone come out with evidence of faked evidence is approximately 0.0001% and declining with every year. 
  
  You see, Humans aren't good at keeping secrets. Hence why we know about your #3 and #4 examples.