Agriculture-generated emissions of ammonia and nitrogen are a problem at Rocky Mountain National Park in Colorado, though researchers at Texas A&M University believe they can help reduce them by working with livestock operations along the state's Front Range.

Each year, there are more than 1,000 search-and-rescue missions across the National Park System. Did you ever wonder how the rangers go about staging a SAR mission, as they're called. In this week's National Parks Traveler podcast, we talk to the SAR experts at Rocky Mountain National Park to better understand what's involved when the call goes out for help.

More areas of Rocky Mountain National Park that had been closed in the wake of wildfires have been opened back up to the public.