Innovations Report: The climate changing gas dimethyl sulphide (DMS) is being made by microbes at the rate of more than 200 million tonnes a year in the world’s seas, scientists heard today (Tuesday 1 April 2008) at the Society for General Microbiology’s 162nd meeting being held this week at the Edinburgh International Conference Centre. "This gas has many different effects", says Dr Andrew Curson from the University of East Anglia in Norwich, UK. "It triggers clouds to form over the oceans – and clouds …