There may be more northern lights – or aurora borealis – sightings this spring. As we near the spring equinox, also known as the vernal equinox, on March 20, the Earth's magnetic field and solar wind ...

In a hurricane, the wind field refers to the area around the storm where strong winds occur. Not just the winds in the center or in the eyewall, but extending outward in all directions. Think of it as ...