Mars is a cold, dry, desert-like planet. But billions of years ago, scientific evidence suggests that it had a thick ...

41,000 years ago, Earth's magnetic field weakened dramatically. This period, known as the Laschamps excursion, may have unexpectedly influenced life on Earth. A collaboration between archaeologists ...

When it comes to the question of which planet humanity could one day call home, the obvious choice might seem to be Mars. But surprisingly, Venus might actually be a better candidate for human ...

Humans will likely go extinct eventually, leaving behind a planet that has to adjust in their wake. While there is no true consensus as to what a human-free world will look like, there are a number of ...

Elon Musk's brilliant plan for saving us from climate change involves a little help from a swarm of friendly AI satellites.