Into war - against pollution!

In the war against ocean pollution, environmentalists have turned to the humble mushroom. Mushrooms have a unique ability to take dead things and make them pretty again by turning decomposed matter into nutrients. In fact, they’re so adept at tearing down and rebuilding chemical compounds that even oil spills are no match for their natural abilities.

In November 2007, when an oil tanker sprang a leak in San Francisco Bay, 58,000 gallons of oil seeped into the water and beaches. A group of local activists decided to take the clean-up into their own hands, using a technique originally developed to dispose of used motor oil. They headed for the shore and laid out mats made of human hair that were covered in oyster mushrooms. The hair quickly soaked up all the oil, while the mushrooms digested the dangerous chemicals. Within 12 weeks, only harmless compost remained.

The process is so simple and cost-effective that grass roots organizations and local governments are now calling for it to be recognised as a way to clean up contaminated soil on old factory sites.

Threat to Cumbria's last mushroom farm

Cumbria's last mushroom farm is on the brink of closure because of cheap imports and rising costs. Brindle Farm, near Carlisle, was started 30 years ago but low prices and high input costs forced him to get a full-time job four days a week in to subsidise the farm.

A major decline in the last five years has seen the number of mushroom farms in the UK drop to around 60.

And the problem?

Yes, you've guessed it Polish mushrooms!