A lone man walks across an expanse of ice; a mottled tundra; desert badlands. The single human figure becomes a focal point ...

Could Earth have hosted an advanced civilization before humans? This intriguing question is at the heart of the Silurian Hypothesis, a theory that challenges our understanding of Earth’s history. By ...

In a new book, NASA astrobiologist Caleb Scharf says the fate of life on Earth may hinge on leaving our planet behind ...

We could be severely undercounting the number of humans living on Earth, researchers suggest. While the United Nations has determined that as of last summer, there were about 8.2 billion humans ...

A study published in 2023 suggests that nearly 1 million years ago, humanity almost ceased to exist. This potential mass extinction event was discovered by researchers when they began analyzing the ...

Twenty-five years ago, humanity made a significant leap into permanent space habitation. On November 2, 2000, NASA astronaut ...

Carbon sustains life—but excess emissions are driving climate change. WWF is working to restore balance and protect our planet’s future.