User blog comment:DAJohnson27/Truth to the Supernatural World/@comment-27847513-20160614114911/@comment-34326521-20160614125854

Hindsight is 20/20, as they say.

Did Pasteur or Salk know their vaccines would contribute to overpopulation? No. They just wanted to save people who were dying horribly thanks to the diseases they wanted to prevent.

Did Oppenheimer know his work on the atomic bomb would lead to a nuclear arms race or Hiroshima and Nagasaki? No. He just wanted to help stop the Nazis.

With very few exceptions, every intentional discovery was made with the purpose of improving human life, but no human who has ever lived possesses the power of foresight. What you're blaming on them was unknowable to them. And scientists are working around the clock to reverse the damage you speak of. Running a country on renewable energy alone is now a possibility (Portugal did it for 4 days straight). We understand how ecosystems work, so we can prevent further damage.