Archaeologists excavating a site in Dorset, England, have recovered one of the oldest and most complete wooden tools ever unearthed in Britain. The ancient spade is thought to be between 3,400 and 3,500 years old and reveals new insights into the relationship between Bronze Age humans and this waterlogged landscape. The excavation took place at a site near Poole Harbour, which is a diverse wetland habitat today. At present, there is little evidence that humans had any permanent settlements in this area back in the Middle Bronze Age, but researchers believe the site served some sort of seasonal…