Are more oil disasters in our future?

I just read some shocking information at the end of an oil spill article in the Washington Post:

"During World War II, 452 oil tankers were sunk in the North Atlantic, as were an unknown number of the 1080 wrecks lying on the bottom of the Pacific. Little is known about the total amount of oil that spilled directly in to the ocean, but it's likely much went to the bottom in ships that remained virtually intact. It is known that two oil tankers sunk in 1942 lie only a few hundred miles from Australia's Great Barrier Reef and are estimated to contain as much oil as the Exxon Valdez. It's only a matter of time before rotting hulks pose enormous potential to foul fragile environments."

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