Are gas emissions at Yellowstone dangerous? You may ask this question while walking along the boardwalks of Yellowstone's geyser basins, where you'll see billowing white gas plumes or wrinkle your nose at a stinky "rotten egg" smell. In fact, it's a question that has been considered by scientists and visitors to the area for over a century.

Proposed management plans for two national monuments in southern Utah that were reduced in size by President Trump and their surrounding lands would increase air quality impacts, pose a greater threat than other alternatives to cultural resources, not manage any acres to protect wilderness qualities while make more lands available to mining and livestock grazing.

Searchers on Wednesday found a body believed to be that of a missing hiker at the end of Deertrap Mountain Trail in Zion National Park. The backpack and clothing description match that of missing hiker, 47-year-old Maurice Harris of Utah, a park release said.

Photographer Rebecca Latson recently completed a 3-week road trip and move from southeast Texas up to central Washington State. During that time, she visited five national parks. In those parks, she saw some pretty stupid stuff such as litter, people driving faster than the posted speed limit, and poor choices in hiking footwear, to name a few things. Rebecca wrote an article of her observations, which are a good reminder for us all to do some planning and be a little more thoughtful of how we treat our national parks as guests.