About 290 million years ago, a four-legged reptile with three toes on each of its back feet strolled across the mucky land, the waves of a tidal flat likely lapping near its feet, a new study finds.

It’s been 30 years since Marc Reisner’s landmark history of Western water, Cadillac Desert, was first published. The book’s dire tone set the pattern for much subsequent water writing. Longtime Albuquerque Journal reporter John Fleck calls it the “narrative of crisis” — an apocalyptic storyline about the West perpetually teetering on the brink of running dry.

Conservationists and other campaigners are urging President Obama to designate 1.7 million acres of the Canyon watershed a national monument before he leaves office

Bzzzzzz ... Yep, cicada season is here. The insects known for their signature humming sound generally show up each and every July, according to UNLV professor Allen Gibbs, though sometimes they arrive early in June or late in August.

During the summer months, everyone can hear the buzz. The sound seems to fill the air from June through August. It's the sound of cicadas.

Parasitic bacteria that are entirely dependent on the other bacteria they infect have been discovered for the first time, in human spit. The tiny cells have gone undetected for decades, but appear to be linked to gum disease, cystic fibrosis and antimicrobial resistance.

A revolution is taking place in medication and the Nevada Institute of Personalized Medicine at UNLV is at the forefront.

Imagine a white sand beach with a bar at the dock. Water skiers flash by a small island, where fireworks shoot from twin peaks. Now imagine this water paradise is in the desert of drought-stricken Nevada.

Which public agencies are keeping an eye on asbestos fibers generated by a massive highway project? The I-11 Bypass is being built right through the heart of natural asbestos fields in southern Nevada, but it's not always clear which government entities should be monitoring potential health risks.

Frank Van Breukelen is a UNLV researcher who studies Pupfish. He said the fish help scientists understand humans and evolution.

Nevada has recently experienced something called an earthquake swarm. An expert says the phenomenon may signal there's something much bigger on the horizon.

Our solar system may have once been a much more crowded place than it is today.

A study has suggested at least one super-Earth sized planet may have formed in the early days of the solar system before being devoured by the sun.