Wilderness & Resources

10 best national parks for sunrises and sunsets

Before the fire: Capturing the beauty of Columbia River Gorge

Whale tragedy leaves 'Blue Planet II' viewers heartbroken

Can coral reseeding save the Great Barrier Reef?

Earth enjoys a surge of ocean sanctuaries

The mystery of Great Salt Lake's missing mercury

Watch the Earth 'breathing' from space

Urban trees are growing — and dying — faster than their rural counterparts

Days after oil spill, Nebraska approves Keystone XL pipeline project

NASA captures new photos of runaway iceberg, and it's bigger than Delaware

Canada opens first permanent highway to remote Arctic coast

Volunteers help bring life back to Grand Canyon springs