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 ...

Researchers draped a digital terrain model over a shaded image of Ahuna, placing contour lines at 100 meter (330 foot) elevation intervals. Key spot elevations are shown in meters. Disclaimer: AAAS ...

Glaciologists have unveiled the most accurate portrait yet of the contours of the land beneath Antarctica's ice sheet -- and, by doing so, have helped identify which regions of the continent are going ...

I normally bring three types of topographic maps: a paper small-scale overview map, paper large-scale detailed maps, and digital maps (sometimes including additional imagery or data) on a smartphone.

Contour planting involves tilling, discing, and otherwise preparing the land in line with its natural slope, then planting crops on this same line. When you look at a topographic map, the rows and/or ...

When was the last time you planned a backpacking trip without a computer, phone, or GPS unit? Think hard. Unless you're a dedicated old-schooler, it probably wasn't recently. If your map skills are ...