3 hikers dead in Grand Canyon National Park; extreme heat blamed

Three hikers die at Grand Canyon as heat index reaches 'dangerous' levels

New York TimesThree older hikers died from suspected heat-related illness at Grand Canyon National Park during a period of extreme temperatures that forecasters warned would persist. The deaths came as the canyon entered an 'extreme heat' watch, with temperatures set to soar further in the coming days. Park rangers urged visitors to avoid hiking during peak afternoon hours and to carry substantial water supplies. The deaths occurred across different parts of the canyon over a short period.