The shapefiles were derived from the original 1:10,000,000 paper map (Brown et al. 1997) Permafrost, or permanently frozen ground, is ground (soil, sediment, or rock) that remains at or below 0°C for ...
Our editors give you the scoop on all the latest kids' movies available in theaters and via major streaming services and premium video on demand. Check our list of new G, PG, PG-13 (and very ...