Never before have so many Brazilians lived outside their country. Burdened by insecurity and economic hardship, every year tens of thousands of young people and retirees, rich and poor, pack their bags to rebuild their lives far from Latin America's largest economy. That's also the case of Marcos Martins, a trainer and mechanical engineer, who wants to improve his quality of life and plans to leave for Portugal, and Gabriella Vefago Nunes, a nurse who settled in Canada seeking better job opportunities. IMAGES AND SOUNDBITES