Sublime
An inspiration engine for ideas
Digital Cash: The Unknown History of the Anarchists, Utopians, and Technologists Who Created Cryptocurrency
amazon.com
frippery
Bill Hayton • Vietnam: Rising Dragon
Barry Cunliffe
Alice Roberts • The Celts: Search for a Civilization
Alan van Valkenburg
Bill O'Neill • Interesting Stories for Curious People
exodus.
John Hemming • The Conquest of the Incas
prehistory,
Stephen Corry • Tribal Peoples for Tomorrow’s World
From the archaeology it is clear that sometimes flint was added to a cremation, and experiments have revealed how this can suddenly explode to produce showers of colourful sparks; this must have been intentional.