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Federal
USDA Plant Hardiness Zone Map (PHZM)
Department of Agriculture —
The 2012 USDA Plant Hardiness Zone Map is the standard by which gardeners and growers can determine which plants are most likely to thrive at a location. The map is... -
Federal
Clouds and the Earth's Radiant Energy System (CERES)
National Aeronautics and Space Administration —
The Clouds and the Earth's Radiant Energy System (CERES) is a key component of the Earth Observing System (EOS) program. The CERES instruments provide radiometric...