Chicago goes to war with Asian carp

http://www.bbc.co.uk/news/science-environment-26017956


The fear is that Asian carp could completely overrun high-value fisheries such as salmon

The US city of Chicago is considering drastic measures to prevent giant fish infesting North America's Great Lakes.

Authorities are thinking of blocking the city's canal system to stop Asian carp entering Lake Michigan.

Such a move could cost up to $18bn (£11bn) and cause huge economic disruption to the city.

Cheaper options are also being examined, including making burgers out of the fish and eating them to extinction.