A London restaurant is exploring whether eating invasive species such as grey squirrel, American Signal crayfish and Japanese knotweed could help fight their spread, but scientists remain sceptical. The idea behind several "invasive species supper clubs", the last of which was served on Tuesday at "zero waste" Silo restaurant in east London, is to "creatively popularise species that are detrimental to the environment", chef Douglas McMaster, who runs the establishment, told AFP. The omnipresent