
Sunken warships from WWI and WWII are ticking pollution time bombs at the bottom of our oceans
In December 1918, the HMS Cassandra was headed towards Tallinn to support Estonian efforts to break away from Bolshevik rule at the end of World War I. She hit a mine and sank off the island of Saaremaa. Most of her 400 crew survived, but 11 went down with …