Wilderness & Resources

6 places where you can (safely) watch lava flow

Why does hot water freeze faster than cold?

1,000-year-old Tunnel Tree toppled by storm

Explore the urban canopies of major cities with Treepedia

Massive chunk of Antarctic ice shelf poised to break away

The once hopelessly polluted Anacostia River is making a comeback

13 great things that happened in 2016

See Old Faithful erupt with a snowy plume

Visit Antarctica's colorful underwater world

Massive river of molten iron found flowing in Earth's core

These may be the prettiest maps you'll ever see

Italy's deadly supervolcano is readying itself for another eruption