This map released by the Yale School of Public Health on Friday, Feb. 2012 shows a map which indicates areas of the eastern United States where people have the highest risk of contracting Lyme disease based on data from
Perpetual OceanCredit: NASA/Goddard Space Flight Center Scientific Visualization StudioOcean or Van Gogh painting? This NASA image titled "Perpetual Ocean" shows ocean surface currents around the world during the period from June 2005 through Decmeber
Genealogy: ATLAS OF HISTORICAL COUNTY BOUNDARIES Shifting county lines that are part of most states’ histories. This free interactive atlas comes to the rescue, with panning, zooming and options to overlay modern borders.