Although Earth’s two hemispheres lie on opposite sides of the planet and differ in many ways, they share a peculiar ...

It's time for the start of summer — with a full moon to boot. Here’s what to know about the summer solstice in the Northern Hemisphere on Thursday. The Earth spins on a tilt as it revolves around the ...

The progression of leaf coloring from green to the reds, oranges, and yellows of the fall season can be a spectacular sight to behold, but this process is also an important part of a plant's ...

Residents of several northern U.S. states could have the opportunity to see the dazzling northern lights tonight. Here's what ...