  Just forty years ago, Hawking wrote his famous paper on primordial black
holes (PBH). There have been since innumerable discussions on the consequences
of the existence of such exotic objects and ramifications of their properties.
Here we suggest that PBH's in an ever expanding universe (as implied by dark
energy domination, especially of a cosmological constant) could be the ultimate
repository for long lived living systems. PBH's having solar surface
temperatures would last 10^32 years as a steady power source and should be
considered in any discussion on exobiological life.
