Sandstone cliffs rise above the valley in Mana Pools National Park, Zimbabwe. Layers of rock were shaped by erosion and weather over thousands of years. The river below continues to shape the land.

The Silverpit crater mystery in the North Sea appears to have been solved. Scientists say it was formed by an asteroid 43 million years ago.

Ancient microbial activity preserved in wrinkled seafloor sediments challenges assumptions about where traces of early life can survive.

Deep beneath the ocean’s surface, mineral-rich hydrothermal vents may have hosted a critical chemical reaction that helped spark life on Earth. Researchers at the University of Alberta report that the ...