Earth’s tilt is what causes the seasons; in the summer, when our planet’s pole is tipped toward the sun, the days are longer, ...

Albedo II by Catherine Eaton Skinner/Courtesy photo Eastern Poplar by Catherine Eaton Skinner/Courtesy photoSTEP UP GALLERY ...

New research on the orbits of these mysterious asteroids near Venus stress the need for better space rock surveillance.

New data shows that CO2 levels have broken through 430 parts per million, an indication that human-caused global warming will ...

Scientists have uncovered new evidence to suggest that Earth is leaking gases from deep inside its mantle—even in regions ...