Genetically modified crops (GMO) produced by Monsanto and other massive chemical corporations are already facing intense criticism across the globe for serious health and environmental risks, and the news keeps getting worse ahead of a landmark November vote in California over whether or not to label products containing them.

A recent article on GMOs and farmers by Natural Society discussed yet another of the many problems posed by the crops: the destruction of tires on farming vehicles.

The article quotes the publication Autoblog as saying that farmers using Monsanto’s genetically engineered crops have turned to heavy-duty kevlar tires in order to plow and harvest their fields.

Tractor tires that once lasted for many years are now lasting only one or two according to the article, and the sharp GMO crops have been slicing them up, destroying them over time. Kevlar is a strong substance used in the production of bullet proof vests and other military equipment.

The problem of sharp GMO crops can be added to a laundry list of others including the emergence of pesticide-resistant superweeds that have evolved from the other-use of Roundup, Monsanto’s chemical weedkiller, the emergence of pesticide-resistant insects including corn rootworms, and more.

While Monsanto claims it is all about helping farmers with GMO crops and reducing pesticide use, many claim that the exact opposite is happening.

And as the link above showed in the first paragraph, health risks include infertility, weight gain, metabolism issues, and even organ damage and much worse, as demonstrated in lab animals.

Genetically modified crops also become sterile after planting season meaning that farmers are not able to save the seeds and must buy them back from Monsanto each year, along with gallons and gallons of carcinogenic pesticides, of course.

Such purchases have made Monsanto a worldwide company for the most part, and has even led to the appointment of many key executives in high profile “food safety” positions within the United States government.

To avoid GMO crops in the U.S., the main products to avoid buying are non-organic corn, canola, soy, sugar beets (listed as “sugar), and cottonseed oil. But many new varieties are in the works despite objections from many consumers and health advocates.

The California labeling proposition could be a major turning point in the fate of food in America, as a win for labeling GMOs could lead to similar rulings across the country, as well as consumer rejection of them, if polls are to believed. Perhaps that’s why the industry are so scared over the prospect of labeling, donating around $25 million so far for a “No on 37″ campaign.

For more on GMOs, watch the documentaries The World According to Monsanto and The Future of Food.

Nicholas Tomasi is an AP-Award winning journalist and author turned health researcher. He currently runs AltHealthWORKS, a website dedicated to organic food and the GMO-free movement.