What's The Best Way To Preserve Wilderness?

Whitebark pine trees are suffering from beetle infestations, fungal infections, and climate change. Some scientists around Crater Lake National Park are selectively breeding the tree, looking for saplings that are more resistant to infection. They're then planting those saplings in parts of the park.

But does it really count as wilderness if humans are planting the trees?

That's the nature of a debate simmering in conservation communities. Some say the value of wilderness is that it is pristine and untouched by humans. Others say humans must get involved if species are to be preserved.

We talk to Emma Marris, author of a recent article in Orion Magazine looking at this debate.