Dating, exposing hoaxes, and fluoride in the ocean

Is fluoride a hoax? Nope, but it did prove the Piltdown Man skull was a hoax! The longer a fossil is in the ground, the more naturally-occurring fluoride it absorbs from groundwater. This new method of dating fossils was used in 1953 to show that the Piltdown Man skull was not a new species of … Read more

Fluoride Fact Friday: MCLs, Australia research, volcanoes

We’ll keep it simple for our first fact for Fluoride Fact Friday: One important source of fluoride in earth’s fluoride cycle is volcanoes! Another fact for the day … Fluoride is the only substance that has both an MCL and SMCL in EPA’s drinking water treatment standards and guidelines. What’s MCL and SMCL, you ask? … Read more