Many of us have wondered what a landscape we see in a modern photograph might have looked like centuries ago. This question ...

Normally, younger rocks are deposited above older ones, forming predictable geologic layers. In the North Sea, this process ...

Understanding the similarities and differences of the deserts on Earth and Mars will help space travelers survive future ...

Fortunately, there’s an interactive map that can help with that. As Boing Boing explains, TimeMap.org combines the what, who, and where of history into one convenient world map.