I always wondered why the biblical folks in Genesis lived so long. Adam, 930 years, Methusela, 969, Seth, 912, Jared, 962, and so on. Then folks born after about 1750 B.C.E. started living only as long as we do.
Was there some virus that caused people to die early? Did God decide that people were living too long and the world would get crowded? What phenomenon could cause this sudden biblical gerontological phenomenon?