New Scientist: Rising ocean temperatures might leave coral reefs in seriously hot water “” without clouds for protection. Five years ago Graham Jones and his team at Southern Cross University in Lismore, New South Wales, Australia, demonstrated that algae living in coral tissue produce a gas called dimethyl sulphide (DMS). When released into the atmosphere, DMS helps clouds form over coral reefs. Jones says that the clouds block sunlight and cool the sea. His team have now discovered that a …