US proposes new safety rules for workers toiling in high heat

The rule would be aimed at mail carriers, delivery people, construction workers, landscapers, restaurant staff and others exposed to consistently high heat indexes, which measures how the temperature actually feels to humans. The measure -- which would affect about 35 million workers, according to the government -- would apply to those working both inside or outside who can expect to be exposed to a heat index of 80 degrees Fahrenheit (26 Celsius) or higher. "The purpose of this rule... is to significantly...