MACON, Ga. — When you were in school, you may have learned about topography and then quickly forgot it. Topography is the study of land features, like mountains, creeks, and hills. It plays a big role ...

Unless you happen to be a topography expert, it may be difficult to know the exact elevation of your neighborhood. Here's a ...

Add Yahoo as a preferred source to see more of our stories on Google. When was the last time you planned a backpacking trip without a computer, phone, or GPS unit? Think hard. Unless you're a ...

Earth's elevation is measured relative to sea level. Other planets and moons lack oceans. Their elevations are based on average radius. This differs from Earth's elevation system.

Cold, steep, high-elevation slopes with less vegetation produce coarser and larger sediment than low-elevation, gentle slopes. This finding quantifies how sediment production varies with topography ...

A warming climate is likely to drive species to higher, cooler altitudes. A new study highlights a less obvious, yet crucial way in which their new habitat could differ from the one they leave behind.