Crowds flock to Yellowstone as park reopens after floods

Throngs of tourists gleefully watched the legendary Old Faithful geyser shoot towering bursts of steaming water while others got stuck in "bison jams" on picturesque valley roads as visitors returned Wednesday for the partial reopening of Yellowstone National Park after destructive floods.

Amtrak derailment victims identified as Georgia couple, Illinois man

The three people who died when a train derailed in rural Montana over the weekend included a Georgia couple who were on a cross-country trip to celebrate their 50th wedding anniversary and 29-year-old Illinois man who was traveling to Oregon with his wife.

Gaps in US wildfire smoke warning network leave many exposed

Huge gaps between air quality sensors in the western U.S. have created blind spots in the warning system for wildfire smoke plumes sweeping North America this summer, amid growing concern over potential health impacts to millions of people exposed to the pollution.