Riding Gravity Away from Doomsday
  The discovery that most of the energy density in the universe is stored in
the form of dark energy has profound consequences for our future. In particular
our current limited understanding of quantum theory of gravity indicates that
some time in the future our universe will undergo a phase transition that will
destroy us and everything else around us instantaneously. However the laws of
gravity also suggest a way out -- some of our descendants could survive this
catastrophe by riding gravity away from the danger. In this essay I describe
the tale of this escape from doomsday.
