Physorg: Ploughing resources into the use of natural gas as an alternative energy supply could lead to global shortage within 20 years time, according to a leading energy expert. Professor in Physics at Uppsala University in Sweden, Kjell Aleklett, says reliance on natural gas – believed by many to be a key source of alternative fuel for the future – would be a major mistake. Whilst it could provide a short term solution to the energy issue, Professor Aleklett believes it is not the …