Singapore has built the world 's first ecological landfill island . Birds , fish and plants have flocked to the island 's mangroves . Score: 6 nature walks , fishing and bird-watching excursions . Scientists expected that some of the mangroves would not survive the relocation , but today they cover 1.4 square kilometers around the island and even have to be cut back in places -- a sign that the landfill is indeed leak-proof . The landfill will eventually be used to meet Singapore 's land use needs .
Singapore has built the world 's first ecological landfill island . Birds , fish and plants have flocked to the island 's mangroves . Score: 6 nature walks , fishing and bird-watching excursions . The landfill will eventually be used to meet Singapore 's land use needs .