The Drake Passage, between the southern tip of South America and Antarctic, is infamous as one of the most dangerous journeys on the planet. But why is it so rough – and how can you cross safely?

The diagrams show what happens when P waves and S waves pass through the Earth. S waves do not pass through the Earth's core S waves cannot pass through the liquid outer core, but P waves can.

Earthquake data suggest that all or small patches of the inner core's surface may be swelling and contracting.

These plates move slowly, but can cause earthquakes and volcanoes where they meet. The seismic waves produced by an earthquake are monitored and tracked. The Earth is almost a sphere. These are ...

To stand at the edge of an ocean is to face an eternity of waves and water ... the vast majority of the living things on the planet. In this little-seen world, swirling super-highway currents ...

To begin exploring the simulation, simply run the program and interact with the environment by creating waves with mouse clicks. Experiment with different parameter values to observe how they affect ...