Comet C/2025 A6 (Lemmon) is this year’s brightest comet visible from Earth—an icy relic from the solar system’s origins that ...

Studies show that spending time on the links offers real benefits for cardiovascular health, cognition, and lifespan. “The ...

A thick, honey-like adhesive at the tip of a chameleon’s tongue lets it bring its prey to its mouth after snagging it, ...

Long thought extinct, a 750-limbed creature has been found near Silicon Valley—and this millipede's got claws and even its own "clothing." ...

The Republic's climate reporter started her journey on the Arizona Trail with detours that were forced by wildfires and left ...

The Arizona Republic's climate reporter, Joan Meiners, is biking the length of the Arizona Trail to document changes to ...

Dan Buettner's iconic National Geographic cover story transformed our idea of what makes for a long, healthy life. It's now published online for the first time. OKINAWA, JAPANSquatting effortlessly on ...

Small towns near national parks are losing millions each day as the government shutdown forces reduced staffing and visitor ...

Decades ago, India’s tigers were on the brink of extinction. Slowly, their numbers have rebounded. But that ecological success has prompted a dire problem—and a race to save many of them from genetic ...

Arizona is filled with haunted lore, from ghostly tales to UFO sightings that are equal parts terrifying and fascinating.

Spend the night in locations guaranteed to thrill, from pods dangling off a cliff to underground rooms in an old mine. If a series of transparent capsules suspended 1,300ft above Peru’s Sacred Valley ...

Next time you're on social media consider this: one study evaluating influencer posts on Instagram found that 86 percent of nutrition content didn’t cite any scientific sources—and other research ...