Many countries are already demonstrating how we can build stronger bonds between nature, our economy and our health. Without protecting nature, we are in closer and more frequent contact with viruses that can spread from animals to people. The Seychelles, a string of 115 verdant, rocky islands in the Indian Ocean, recently took a step in that direction. The country announced it would protect 30% of its glittering turquoise waters -- 410,000 square kilometers (158,000 square miles) -- from commercial use.

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