Orkney’s seaweed-eating sheep adapted 5,500 years ago to be able to graze on the slimy fodder

Sheep on the Orkney isles have been eating seaweed since animal husbandry was introduced in 3500 BC, new research suggests. The landscape on the islands 5,500 years ago was predominantly treeless, as it remains today, so marine seaweed provided a useful alternative fodder. Read more.