Prince William warns of 'nature crisis' delivering a landmark speech in Brazil

Prince William has warned of a 'nature crisis' facing the world as he delivered a speech at an anti-wildlife trade summit in Brazil.The landmark talk was given at the United for Wildlife Summit - thrown by the Prince and Princess of Wales 's Royal Foundation - in Rio on Tuesday night.William told the conference that Latin America 'stands as a global leader in biodiversity and environmental conservation' and will play a 'crucial role in shaping the world's response to nature loss at this decisive moment'.It came hours after he was gifted an eye-catching scarf, made for him by an indigenous leader, as he met stars from his BBC Earth 'Guardians' programme, which aired earlier this year.