At the end of February snow is melting in northwestern Europe, hinting at the spring that is coming. Only in Poland, in the lower right corner of the image, and the highlands of Sweden, in the upper right corner, does white snow still dust the ground. There are signs of spring run-off in this image pair, acquired by the Moderate Resolution Imaging Spectroradiometer (<a href="http://modis.gsfc.nasa.gov">MODIS</a>) on NASA’s <a href="http://terra.nasa.gov/">Terra</a> satellite on February 20, 2004. Tan sediment colors the coastline of Denmark and Germany in the North Sea. The sediment is tan where it first enters the water in high concentrations, then colors the water green and light blue as it disperses. In the false-color image, water is black and dark blue. Snow is light blue, and clouds are a lighter shade of blue. Vegetation is bright green. Sensor: Terra/MODIS. Data Start Date: 2/20/04.