At least 100 people are killed by rip currents every year. Here's what you need to know about how to spot them and what to do if you're caught.

Rip currents can sweep away even the strongest swimmers. Rescues can quickly turn to tragedy when a rescuer gets caught in the current.

Alternating current (ac) or direct current (dc) circuits are capable of carrying very different currents, as illustrated by the ratings on the switch in Figure 1. This is why it’s so important ...

Here's what to know about rip currents, and how you can stay safe if you ever find yourself stuck in one. What exactly is a rip current?

Preliminary National Weather Service data shows 18 lives have been lost due to rip current drownings across the United States in June.