Note: This article was corrected on April 16, 2002: in Appendix A, the country developing ASTER was changed to Japan/USA. Perspective Remote Sensing and Human Health: New Sensors and New Opportunities Louisa R. Beck,*† Bradley M. Lobitz,† and Byron L. Wood† *California State University, Monterey Bay, California, USA; †NASA Ames Research Center, Moffett Field, California, USA