Activists from the "Rio de Paz" human rights group display 733 empty plates on Rio de Janeiro's Copacabana beach ahead of the G20 summit to urge leaders to tackle hunger. "The empty plate symbolizes death. All this because last year, according to UN data, 733 million people suffered from hunger", explains NGO head Antônio Carlos Costa. "We can solve the problem. What is lacking is political will," he adds. IMAGES AND SOUNDBITES