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.
Find out what you can do to fix it. You can lose your hearing for lots of reasons: age, genetics â and all those blaring rock concerts you attended in your youth. More than 48 million Americans have some type of hearing loss. For many people, auditory loss happens so gradually that they barely realize it. Others find that their ears seem to be working fine one day and not so well the next. Check out these four common types of hearing problems and what you can do about them.