From whale watching in Monterey, California, to dune surfing in Colorado and beach bliss in Hawaii, here are some of the best ...

A breathtaking new image of the RCW 38 star cluster showcases a cosmic nursery bursting with color, light, and energy.

Purple Earth Hypothesis suggests Earth was once a purple planet. Early microbes used retinal, not chlorophyll, for ...

When the Sonoran Desert dims to purple twilight, Arizona's remarkable owl diversity comes alive. Listen for their series of ...

There's a good chance the northern lights will be visible in the United States on Valentine's Day 2025. Here's why, and where to look for them.

Created by former President Joe Biden just days before he left office, Chuckwalla National Monument will further protect desert habitat in Southern California.

Arizona/Utah Border, USA Nestled between the sandy terrains of Arizona and Utah, The Wave is a geological marvel that looks ...

Welcome to Arizona – the land of endless sunsets, desert landscapes, and where you can fry an egg on the sidewalk in July ...

There are few experiences in life that capture the sheer wonder of floating above the world as the sun rises. My recent hot ...

Save the date for #ThisIsTucson's third annual market featuring 100 vendors, food trucks, live music and more on Feb. 22 in downtown Tucson.

Arizona has some of the prettiest sunsets, but why? There's a science behind it. Here's what to know, including sunset times ...