Only 20 to 25 percent of Americans are scientifically savvy and alert. Most of the rest don't have a clue.

At a time when science permeates debates on everything from global warming to stem cell research, people's inability to understand basic scientific concepts undermines their ability to take part in the democratic process.

American adults in general do not understand what molecules are (other than that they are really small). Fewer than a third can identify DNA as a key to heredity. Only about 10 percent know what radiation is. One adult American in five thinks the Sun revolves around the Earth, an idea science had abandoned by the 17th century.

Also scary from the article, "Lately, people who advocate the teaching of evolution have been citing Dr. Miller's ideas on what factors are correlated with adherence to creationism and rejection of Darwinian theories. In general, he says, these fundamentalist views are most common among people who are not well educated and who "work in jobs that are evaporating fast with competition around the world."

Scientific Savvy? In US, Not Much