Data from Healthy Youth Survey about current marijuana use in grades 6, 8, 10, and 12, for 2004-2012 (even years)

Northeastern United States County Boundary data are intended for geographic display of state and county boundaries at statewide and regional levels. Use it to map and label...

Global monthly derived winds can be obtained for any point on the ocean (Northern Hemisphere: 1967 - present, Southern Hemisphere: 1981 - present). ERD was established at the...