In this talk I will give a basic introduction to Loop Quantum Gravity (LQG),
a candidate theory to unify gravitation and quantum physics. Such a theory
is needed to describe regimes where both gravitational and quantum effects
are strong such as in small black holes. I will explain how a simplified
model of LQG produces qualitatively different black holes which are devoid
of the afflictions normally present in black holes and how the elusive dark
matter could be constituted of ultra-light versions of these black holes.
