The 36-year-old former soldier has become a driving force behind efforts to force the Army to revise its response to soldiers suffering from PTSD.

NPR: Former Soldier Helps Others Fight Army for Help

There are many billionaires in Canada, but only one of them has emerged as a driving force behind Canadian efforts regarding two of the most important natural resources in the country: oil and hockey.

FORBES: The Most Important Billionaire In Canada

For more than 45 years, ICTP has been a driving force behind global efforts to advance scientific expertise in the developing world.

UNESCO: Basic Sciences