It is naturally unstable and so it will spontaneously decay back into N-14 after a period of time.It takes about 5,730 years for half of a sample of radiocarbon to decay back into nitrogen.Consumer Reports found that the spread between the best and worst alkalines was only 9-15%. Alkalines leak more frequently than any other kind of battery. Three of the biggest battery-makers offer to replace any equipment damaged by their batteries.Tests by ZBattery also showed little difference between name-brand alkalines. The Rayovac and Energizer guarantees seem to cover leakage, but the Duracell wording is a little more ambiguous (and they wouldn't answer my request for clarification).Rachel Wood does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond the academic appointment above.
They're all pretty much the same, despite the manufacturers' commercials.Plants and animals naturally incorporate both the abundant C-12 isotope and the much rarer radiocarbon isotope into their tissues in about the same proportions as the two occur in the atmosphere during their lifetimes.When a creature dies, it ceases to consume more radiocarbon while the C-14 already in its body continues to decay back into nitrogen.It takes another 5,730 for half of the remainder to decay, and then another 5,730 for half of what's left then to decay and so on.The period of time that it takes for half of a sample to decay is called a "half-life." Radiocarbon oxidizes (that is, it combines with oxygen) and enters the biosphere through natural processes like breathing and eating.