As temperatures heat up, farmworkers across the U.S. push for more rights Today's best articles Daily business briefing Solving COVID newsletter Three years ago, in Homestead, Florida, fieldworker Sofia spent several hours outside in 90-degree heat, cultivating shrubs, bushes, and other ornamental plants â when her vision suddenly blurred. "I was working and suddenly everything went white, and I fell," she said. She started to vomit and couldn't get back up. Sofia, who's undocumented, and asked to use her first name only, said she was suffering from heat stress â the second time that week. She was also covered in long sleeves, wore heavy boots, a wide-brimmed hat, and a bandana covered her mouth and nose â all adding an additional 10 degrees to her body, she said.