The U.S. Supreme Court on April 27 grappled with Monsanto’s appeal that asks it to block thousands of lawsuits that allege that the company failed to warn consumers that Roundup, its popular weedkiller, could cause cancer. A state-level jury previously ruled in favor of John Durnell, a Missouri man who developed non-Hodgkin lymphoma after exposure to Roundup, which was developed by Monsanto. Roundup contains glyphosate, a herbicide that kills weeds and grasses. Glyphosate-tolerant crops make up most of the corn, soy, and cotton acreage on U.S. farms. The jury found Monsanto liable for failing to warn Durnell of the danger posed by glyphosate and awarded him $1.25 million in damages. Separately, the company has paid out billions of dollars in settlements over Roundup....