People protest during a march at the People's Summit at Rio+20 for Social and Environmental Justice in Rio de Janeiro June 20, 2012. The People's Summit at Rio+20 for Social and Environmental Justice is a parallel event of the Rio+20 United Nations sustainable development summit. REUTERS/Ana Carolina Fernandes (BRAZIL - Tags: CIVIL UNREST POLITICS ENVIRONMENT SOCIETY)
ï¿½ STRINGER Brazil / Reuters
There might be sand in the gears at the official meetings at the UN sustainable development summit in Rio de Janeiro, but there is plenty of action among activists and others outside the building.
Anchor Marco Werman talks 18-year-old activist Alysha Huggins, one of the thousands of young activists pressing for a new greener approach to human development.