Over hundreds of millions of years, Earth could return to a lifeless state, with continents merging, ozone depletion, and CO2 dropping, ending photosynthesis.

For decades, scientists have generally thought that rivers emit more carbon dioxide, a greenhouse gas, than they take in. But ...

Nights draw in with the time change. We come home at day’s end in dusk, or even nighttime. It is amazing how many drivers ...

From growing smaller leaves to shape-shifting its insides, a desert flowering plant goes all in to flourish in the harshest of conditions.

About 50 meters from the cave entrance, the walls are no longer rock — they’re all web. The structure is haunting and vast, ...

In California's Death Valley, where summer temperatures regularly soar above 120 degrees Fahrenheit, life seems almost impossible. Yet among the cracked earth and blinding sunlight, one native plant ...

The red pigments in some fall leaves have proven to be a puzzle for researchers who debate why leaves bother to go red.

Fall. The sun is setting earlier, the air has that crisp, earthy smell, and the garden seems quieter than usual. But beneath ...

Cambridge scientists have built a solar-powered leaf that turns carbon dioxide into sustainable fuel and everyday chemicals.

When summer fades and fall emerges, lush green tree leaves give way to a variety of warm hues in foliage that mark the ...

These teacher-tested activities use free or familiar tools to help students think critically, create meaningfully, and ...