Ken graduated with PHD in chemistry in 1970. He has worked as a research scientist ever since, mainly on soils and agricultural issues.

His early research investigated the reaction of phosphate and fluoride with minerals and soils. Later work involved investigation of soil life and nutrient transfers. He also has done research on apatites and fluorosilicic acid, which are relevant to the controversy around community water fluoridation (CWF).

In 2013 he became active on online debates about CWF. His local city council had become influenced by anti-fluoridation campaigners and stopped fluoridation, despite public support from it as evidence by a previous referendum and council polling. After protests the council held another referendum, fluoridation received 70% voter support and CWF was restarted.

He writes a blog, Open Parachute, where he discusses scientific and related issues - particularly science denialism. Since 2013 many of his blog posts have been devoted to explaining the science behind CWF and debunking claims made by anti-fluoride campaigners.

http://openparachute.wordpress.com