Honorary Research Fellow , University of Bristol
I have an academic background in geology and geochemistry and worked in the exporation side of the oil industry.
My interests now lie in the history of geology.
I recently published a popular science book on the history of dating the age of the Earth entitled: 'The Dating Game: One Man's Search for the Age of the Earth'.
I have also written a book on the medical and geological work of James Parkinson (1755-1824) who gave his name to Parkinson's Disease, and started to research the geological work of David Mushet (1772-1847) who, although famous for his experiments on the manufacture of iron and steel, is not know for his geological expertise,

James Parkinson discovered a debilitating disease 200 years ago – and did plenty more besides
Apr 12, 2017 14:55 pm UTC| Insights & Views Health
He was a doctor, a political radical, a pioneering geologist, and a champion of the poor. But James Parkinson is best known for discovering the disease which bears his name. It was in 1817 that he wrote his Essay on the...