nThe age of the earth has been tied to the rate of growth of coral for more than a century now
nIn the March 1997 issue of Nature, three scientists reported on their work in measuring the growth of living staghorn coral
located in the
Great Barrier Reef in Australia
nUsing a precision laser measuring device, they found that coral was growing at the rate
of 1.25 inches
per year
nSince some coral is more than 2000 feet deep, that leads to an age of the earth of at
least 19,200
years old