WorldEarth Day: UN chief says world needs more food, energy, jobsShahid AbbasiApril 21, 2012April 22, 2012 by Shahid AbbasiApril 21, 2012April 22, 2012 Washington: United Nation Secretary General Ban Ki-moon says “the world will need at least 50 per cent more food, 45 per cent more energy, 30...