How close did you pay attention to the landscape the last time you went for a hike in a national park? Did you notice the variety of trees or plants, the birds, the insects? Could you tell where there had been a fire or a flood? More subtly, could you see where the nutrient sinks in the ecosystem were? Most of us probably can't answer that last question, but researchers at Isle Royale National Park have uncovered some intriguing contributions to the park's biodiversity.

Delaware is the only state without an NPS unit. A bill recently introduced in the U.S. Senate aims to fix that. Will this dog hunt?

With all that snow atop Mount Rainier, it's no surprise that folks head to the mountain to make some turns. But those turns are really earned, as there's no lift. This short video shows some turns made the other day following the recent snowfall at Mount Rainier National Park.

Fighting forest fires is one of the most dangerous occupations to partake in. And yet, many of those who fight these blazes are energized by the danger they encounter. You might say they get an adrenalin high battling the flames. And some firefighters die, more often than not because they were in the wrong place at the wrong time. That appears to have been the case when a young firefighter from Olympic National Park died on the fire lines in 2008.