About 1,000 farmers descended on New Zealand's Parliament Friday morning to protest against a proposed tax on greenhouse gas emissions from sheep and cattle.

Farmers call it the flatulence tax, in polite company. The money raised would go for research on cutting greenhouse gas emissions.

The Federated Farmers of New Zealand have launched a campaign called Fight Against Ridiculous Taxes. (Note the acronym.)

Wellington, New Zealand

Scientists estimate that methane emitted by farm animals is responsible for more than half of New Zealand's greenhouse gases.

Farmers claim they are being unfairly targeted by the government and they say they won't pay.

The tax could raise about $6 million a year.