In 1770 some textbooks say the earth is 70,000 years old.
In 1905 textbooks say the earth is 2 billion years old.
In 1969 textbooks say the earth is 3.5 billion years old.
As of 2006 textbooks state the earth is 4.6 billion years old.
The earth is getting older at the rate of 21 million years per year for the last 220 years, which is 40 years per minute.
Good to know we've been teaching our kids these facts...
no wonder they're confused.