Mud worms of Canada, rejoice; you are safe, or at least as safe as one can probabilistically infer from spending a great deal of time studying wastewater and sedimentary sludge. In a little-noted decision on the leap day of February, Canada – the canary in the Western Hemisphere’s regulatory coalmine – reversed course on listing the tongue-twisting chemical decamethylcyclopentasiloxane as a toxic substance. Hard to say and impossible to avoid, the chemical is part of the silicones family …. Read the full story on Forbes.com.