Microwaves 'cook ballast aliens' (BBC) {invasive species}

By Mark Kinver
Science and nature reporter, BBC News

US researchers say they have developed an effective way to kill unwanted plants and animals that hitch a ride in the ballast waters of cargo vessels.

Tests showed that a continuous microwave system was able to remove all marine life within the water tanks.

The UN lists "invasive species" dispersed by ballast water discharges as one of the four main threats to the world's marine ecosystems.

The findings will appear in the journal Environmental Science and Technology.

Shipping moves more than 80% of the world's commodities and transfers up to five billion tonnes of ballast water internationally each year, data from the UN shows.
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more: http://news.bbc.co.uk/2/hi/science/nature/7392072.stm

Too bad they couldn't do this way back in the 1980s. Though that still wouldn't have stopped common carp, silver carp, bighead carp, black carp, northern snakeheads, rusty crayfish...

and lake Havasu.