Pushing up trees: is natural burial the answer to crowded cemeteries?

Kevin Hartley had worked in cemeteries and funeral services for 15 years when, at a party in 2007, someone asked what his plans were for his body when he died. He contemplated the furnace he had operated, preheated to 1,000C, from which he raked ash and bone onto a tray before pouring them into a cremulator.