Nature World: Soft corals are more resilient to changes in oceanic acidity than previously believed, a new study has found. Coral reefs provide shelter to thousands of marine organisms. Rising levels of carbon dioxide and ocean temperature are threatening the existence of these beautiful "forests of oceans." A new study from Tel Aviv University researchers and colleagues has shown that soft corals can resist the harmful effects of decreasing pH in the ocean. The research is published in the journal PLOS One....