A research team from a university found a fossil at a location in Singapore and used carbon dating to determine its age. Carbon dating works by measuring the ratio of carbon-12 and carbon-14 in organic material, since carbon-14 decays at a known rate. The team used a logarithmic formula involving the natural logarithm of the carbon-14 percentage in the sample compared to a living organism, multiplied by the carbon-14 half-life of 5,700 years, to calculate the fossil's age. They provided an example calculation where a sample with 10% carbon-14 was determined to be 18,940 years old.