  In both classical and quantum world, information cannot appear or disappear.
This fundamental principle, however, is questioned for a black hole, by the
acclaimed "information loss paradox". Based on the conservation laws of energy,
charge, and angular momentum, we recently show the total information encoded in
the correlations among Hawking radiations equals exactly to the same amount
previously considered lost, assuming the non-thermal spectrum of Parikh and
Wilczek. Thus the information loss paradox can be falsified through experiments
by detecting correlations, for instance, through measuring the covariances of
Hawking radiations from black holes, such as the manmade ones speculated to
appear in LHC experiments. The affirmation of information conservation in
Hawking radiation will shine new light on the unification of gravity with
quantum mechanics.
