Volcanic rock at the Sáttítla Highlands National Monument filters rain and snowmelt into an underground aquifer network that ...

On an overcast winter morning that smelled of damp earth and pine needles, Isaiah Scott paused mid-step along a muddy, ...

That’s exactly what awaits at Pedernales Falls State Park, a hidden natural masterpiece tucked away near Johnson City, Texas.

Fishing duo Cole and Jay raise monarch caterpillars to help the butterflies.

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 ...

The Endangered Species Act is no help yet.

From Niagara Falls to the Redwood Forests, state parks preserve many of the nation’s iconic landscapes and historic treasures ...

Extreme humidity and triple-digit temperatures are affecting around 250 million people across the United States. Here's the science behind the heat dome that’s stifling the nation. A sunbather rests ...

Learn the science behind the sensation of butterflies in the stomach and what it reveals about your body.

Kim Knor has the kind of biography Hollywood blockbusters are made of—and has just notched a new milestone in her quest to keep living life to the fullest. 86-year-old Kim Knor completes her 1,000th ...

Every so often, unseasonably mild weather will rouse butterflies from hibernation earlier than usual in the Inland Northwest. But in January? That’s plain extraordinary.

Ahead of the release of Sam Raimi's "Send Help," revisit the stories of Alexander Selkirk, Marguerite de la Rocque, the Tongan castaways and others who endured in remote locales ...