Here's how engineers salvaged Italy's massive shipwreck

Yesterday, engineers successfully led one of the largest salvage operations in history on the shipwrecked Costa Concordia, which smashed into a small Italian island twenty months ago. Workers were able to right the ship in roughly 19 hours. This graphic shows how they did it, and how they'll float it away. » 9/17/13 10:40am 9/17/13 10:40am

Why there really is no such thing as an unsinkable ship

The Titanic's sinking was a hundred years ago this month, and not all the commemorations are directly related to James Cameron's movie. For one thing, we can finally get to the bottom of just why anyone ever called Titanic "unsinkable." » 4/02/12 9:50am 4/02/12 9:50am