I have seen this advice before, saying it is not safe to keep cooked rice for more than a short time, even in the fridge.
A man called Willard F Libby pioneered it at the University of Chicago in the 50's. This is now the most widely used method of age estimation in the field of archaeology.
Unlike people, you can’t really guess the age of a rock from looking at it.
The C-14 within an organism is continually decaying into stable carbon isotopes, but since the organism is absorbing more C-14 during its life, the ratio of C-14 to C-12 remains about the same as the ratio in the atmosphere.
Radio carbon dating determines the age of ancient objects by means of measuring the amount of carbon-14 there is left in an object.
After I released a lamb that had got its head stuck in a fence, it ran halfway across the field to a ewe and immediately started suckling.
Radiocarbon, or Carbon-14, dating is probably one of the most widely used and best known absolute dating methods. Radiocarbon dating relies on a simple natural phenomenon.
Animals eating those plants in turn absorb Carbon-14 as well as the stable isotopes.
This process of ingesting C-14 continues as long as the plant or animal remains alive.
The unstable isotope is brought to Earth by atmospheric activity, such as storms, and becomes fixed in the biosphere.
Because it reacts identically to C-12 and C-13, C-14 becomes attached to complex organic molecules through photosynthesis in plants and becomes part of their molecular makeup.
This allowed for the establishment of world-wide chronologies.