Professor Matt Lachniet spends hours looking for clues. This Thursday, he shows us samples in his laboratory of stalagmites from Nevada caves. Some are thousands of years old, pointing to a time when this desert was actually hotter and drier, which coincides with a time when the oceans we now call the Pacific and the Arctic were warmer.

November 30, 2018, is a day many Alaskans will never forget. At 8:30 Friday morning 7.0 magnitude earthquake rattled Anchorage, Alaska and the surrounding region.

The latest national climate assessment captures the future impacts of a warming planet more completely than reports that have come before it, UNLV geology professor Matt Lachniet says.

How do you make a great park even better? They carefully wrestle with that conundrum regularly at Oak Openings, a precious and rare ecosystem that is part of a large region of oak savanna that the Nature Conservancy once called one of the 200 “Last Great Places on Earth.”

When you’re out hiking, you never know what you might see. You could cross paths with lizards, tarantulas or maybe even something bigger like a javelina. More likely, you’ll also come across the tracks of these critters.

It’s time for a dinosaur update.

A few years ago, UNLV researchers were tasked with trying to figure out what kind of prehistoric animal made tracks that were fossilized in the area of Gold Butte National Monument.

It's not just ordinary sleep, it's a biological/natural wonder and a bear's miracle.

Eons ago, somewhere on Earth, a prehistoric lizard-like creature crept across a wet sandy dune next to a shallow continental sea.

About 315 million years ago — long before dinosaurs roamed the Earth — an early reptile scuttled along in a strangely sideways jaunt, leaving its tiny footprints embedded in the landscape, new research finds.

Brian Hedlund and Ariel Friel collect microbes living for tens of thousands of years in the subsurface of the earth. By studying these microorganisms, they hope to gain clues about potential life on Mars and other planets.

Geologists have uncovered a set of 28 footprints along a hiking trail in Grand Canyon National Park. The footprints were left by a reptile-like creature and are cemented in a 310 million-year-old rock, making them oldest tracks ever to be found in the site.

310-million-year old footprints of a "lizard like-creature" have been unearthed in the Grand Canyon, making them potentially the oldest ever reptile footprints ever found.