For almost 50 years, a brass and aluminium sphere weighing 900 pounds has circled our planet. NASA launched LAGEOS, the Laser ...

A recent study suggests that the Earth's population, which currently stands at 8.3 billion, has surpassed the planet's capacity, with humanity's ecological footprint exceeding the Earth's biocapacity ...

Astronauts and robotic spacecraft have captured breathtaking photos of Earth from space for decades. See the best images.

Earth may be the only planet in the universe that we know to support life. However, astronomers have identified several alien exoplanets that could have even better environments, making them ...

Even when Earth was locked in its most extreme deep freeze, the planet’s climate may not have been as silent and still as once believed. New research from ancient Scottish rocks reveals that during ...