As You Sow has brought this issue to the attention of major companies, including Kellogg, a leader in sustainable agriculture who responded by agreeing to survey its supply chain about pre-harvest use of glyphosate.

"Experts, including the United Nations Food and Agriculture Organization, agree that pesticides are not necessary or helpful to feed the world," said Danielle Fugere, president of As You Sow. "Investors would be prudent to analyze their exposure to pesticide-intensive agriculture and prioritize sustainable solutions."

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