Top Eight Inventors That Saved The Most Lives Life expectancy among humans has only ever been increasing. The world average human lifespan increased by about 30 years since 1955 according to a 2017 United Nations research study. And a lot of that has to do with scientific and technological advancements made by the world’s curious pioneers who asked the question, “how can we make this better?” From seat belts to genetic mapping, it’s no wonder we’re living longer than ever before. But surely some inventions did more heavy lifting than others along the way. Obviously, saving lives is its own reward and being a good person isn’t a competition... but if it were, these folks would win. So join us as we honor the Top Eight Inventors That Saved The Most Lives.