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 ...

Earthquakes, volcanic eruptions, shifting tectonic plates—these are all signs that our planet is alive. But what is revealed ...

See phenomenal photos of the world’s wonders from the February 2017 issue of National Geographic magazine.

Evolutionary organization of the arterial wall into layers occurred concomitantly with the emergence of a highly muscularized, pressurized arterial system that facilitates outward hydraulic ...

One dead and 69 injured as 5.8-magnitude quake sparks panic across tourist resorts - Tourists in Rhodes, Greece describe ...