Every six months, the equinox splits Earth's day almost in half. Here's how it happens—and why people have celebrated it ...

Despite the unpredictable weather, spring officially arrives today, marking the vernal equinox – a precise celestial event ...

Add Yahoo as a preferred source to see more of our stories on Google. Hiking the Mist Trail toward Vernal Fall, one of the segments affected by the temporary closures this fall. (Gregory Thomas / The ...

Heights are not my thing, yet once again, I found myself pushing the acrophobia envelope. This time, it was on a hike to ascend to the top of a waterfall. Not just any waterfall, but Yosemite National ...

At the top of Yosemite National Park’s Vernal Fall on a recent holiday weekend, amid the throngs of tourists snapping photos and feasting on snacks and picnic lunches, a squirrel crept across smooth ...