By Adriana Alvarenga At the Rio+20 Conference on sustainable development, UNICEF Executive Director Anthony Lake asked the world to consider what equity can do for development and children. RIO DE JANEIRO, Brazil, 25 June 2012 – Throughout Rio+20, the United Nations Conference on Sustainable Development held last week in Rio de Janeiro, Brazil, UNICEF Executive Director Anthony Lake argued that a development model that leaves behind millions of the poorest children is both wrong in principle and unsustainable in practice. “A recent IMF staff discussion note shows that as societies become more equitable, economic growth is more sustainable over time,” said Mr. Lake, speaking on Wednesday at the ‘Sustainable Development in an Unequal World’ side event. “If we can increase vaccinations so that fewer children die of diseases we know how to prevent, if we can provide more micronutrients so that young brains and young bodies grow strong,...