| Smoking causes cancer | A mental illness is a mental condition that affects the brain | Inside our cells there is a complex genetic code that helps determine who we are | Overusing antibiotics causes the development of drug-resistant bacteria | Childhood vaccines are safe and effective | The average temperature of the earth is rising, mostly because of man-made heat trapping greenhouse gases. | Life on Earth, including humans, evolved through a process of natural selection | The Earth is 4.5 billion years old | The universe began 13.8 billion years ago with a big bang | |
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| % of Americans that are extremely/very confident the following are true... | 82 | 71 | 69 | 65 | 53 | 33 | 31 | 27 | 21 |
Sources:
businessinsider.com
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As a result of the complexities of our world, objective truth can be hard to find. Even when it comes to well established scientific principles, many Americans lack confidence that certain facts reflect reality. For example, despite all of the research to the affirmative, only a little more than one in two Americans are very confident in saying that vaccines are safe and effective.