Trekking 1,200 miles (1,930 kilometers) by foot and sled over Arctic ice to survey a distant, unexplored mountain range may feel heroic — until that mountain range turns out to be a mirage. That ...

User Clip: Human-Environmental Interaction: The 100th Meridian. User-Created Clip by amoats July 20, 2020 2018-08-05T23:30:21-04:00 https: ...

MINNEAPOLIS (WCCO)-- New research shows that drier conditions are shifting east, and that means they are moving closer to Minnesota. The 100th meridian line is typically the boundary that ...

Powell, who became the second director of the U.S. Geological Survey in 1881, identified the 100th meridian as a line of demarcation between the humid eastern side of the country and the arid west.

Trekking 1,200 miles (1,930 kilometers) by foot and sled over Arctic ice to survey a distant, unexplored mountain range may feel heroic — until that mountain range turns out to be a mirage.