The earliest part of the Stone Age (3.4million years BP to 300000BP). See 'A Brief History of Climate Change'.
Fact of the Day
In 1506 the Principal of Magdalen Hall, Oxford, was accused of baptising a cat as part of a conjuring ritual to find buried treasure. He later became Bishop of London and a notorious heretic hunter, and was mockingly known as 'Bloody Bishop Christen-cat'.