Despite its medical, social, and economic significance, understanding what primarily causes aging, that is, the mechanisms of the aging process, remains a fundamental and fascinating problem in biology. Accumulating evidence indicates that a small RNA-based gene regulatory machinery, the Piwi-piRNA pathway, represents a shared feature of nonaging (potentially immortal) biological systems, inclu...

The 2014 year ended with celebration: Everolimus, a rapamycin analog, was shown to improve immunity in old humans, heralding "a turning point" in research and new era in human quest for immortality. Yet, this turning point was predicted a decade ago. But what will cause human death, when aging will be abolished?

one of the issues discussed in details in philosophy is the end of humanity after death (according to the tendency of immortality) and the survival of the human population or accepting death and invalidity with destruction of the body. philosophers such as ibn sina, suhrawardi and mulla sadra explain the stages and types of souls after death, and the immortality of them. ibn sina after al-farab...