The rate of decay of 14C is such that half of an amount will convert back to 14N in 5,730 years (plus or minus 40 years). This is the âhalf-life.â So, in two half-lives, or 11,460 years, only one-quarter of that in living organisms at present, then it has a theoretical age of 11,460 years. Anything over about 50,000 years old, should theoretically have no detectable 14C left. That is why radiocarbon dating cannot give millions of years.
Unfortunately, two months have passed since the beginning of what is called sudden sensorineural hearing loss (SSNHL), and it is now too late for you to regain any hearing by means of the most common and effective treatment, steroid therapy.
Sudden hearing loss, the rapid loss of 30 decibels or more of hearing ability, can happen over several hours or up to 3 days. (A normal conversation is 60 decibels.) Sudden hearing loss usually affects only one ear. Although there are up to 3 new cases per every 10,000 people each year, doctors are not able to discover the cause in most cases. Illnesses such as heart disease, high blood pressure, and diabetes put ears at risk by interfering with the ears' blood supply.