Scientists have created a new tool that can give 5 minutes advance warning of a dangerous rogue wave in the ocean.

The surf is always up in Waco, Texas, thanks to an artificial wave so good it's attracting top professionals and casual riders. It's a sign of just how far the technology of wave making has come.

No cause has been established for the sinking earlier this month of the KRI Nanggala with 53 people aboard, but officials have suggested that it may have been due to an undersea wave.