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Pope Pius IX declared him to be both the patron and the protector of the Catholic Church, in addition to his patronages of the sick and of a happy death, due to the belief that he died in the presence of Jesus and Mary.

Radiocarbon dating and the old wood problem

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Along with hydrogen, nitrogen, oxygen, phosphorus, and sulfur, carbon is a building block of biochemical molecules ranging from fats, proteins, and carbohydrates to active substances such as hormones.

All carbon atoms have a nucleus containing six protons.

The hunter who thrust the spear on that long-ago day didn't just bring down the mastodon; he also helped to kill off the reigning theory of how people got to the Americas.

As the ice caps in Canada receded and opened up a path southward, the colonists swept across the vast unpopulated continent.

For some reason, which I have not yet figured out, at least one person per week has been asking me about the Carbon-14 Radiometric Dating Technique.

They want to know if it is accurate or if it works at all.

They have masses of 13 and 14 respectively and are referred to as "carbon-13" and "carbon-14." If two atoms have equal numbers of protons but differing numbers of neutrons, one is said to be an "isotope" of the other.

Carbon-13 and carbon-14 are thus isotopes of carbon-12.