T his week, our two countries celebrate national holidays. Canada’s was July 1 and is called simply Canada Day. It used to be known as Dominion Day but that had a bit too much of a whiff of ...

The ancient history of Earth has always been hard to read. Most of the planet’s earliest crust has been lost, buried, or melted by geologic processes over billions of years.

In 1931, the SS Baychimo, a cargo ship owned by the Hudson Bay Company, became trapped in the ice off Point Barrow, Alaska. Despite efforts to free her, she vanished into the frozen Arctic sea, but ...