Wood samples from Viking settlement(M. Kuitems)
When a settlement at L’Anse aux Meadows, at the northern tip of Newfoundland, was first excavated in the 1960s, the style of its buildings made clear they were constructed by Vikings who had arrived from Greenland in the tenth or eleventh century. But exactly when they made their voyage, becoming the first Europeans to cross the Atlantic Ocean, was a matter of debate. Now, a team of researchers led by Margot Kuitems of the University of Gronin