Iceland is a geothermal wilderness of glaciers, volcanoes, and waterfalls. Many visitors are flocking to the little rocky island in the middle of the Atlantic Ocean. Here are some insider tips that ...

For a pilot, the first signs of flying into an ash cloud can include sudden darkness, fluctuating airspeed, and landing ...

As the last Ice Age came to an end nearly 10,000 years ago, something unexpected happened deep beneath Earth’s surface. Large glaciers began to melt. The sea levels rose quickly—about 1 centimeter per ...