Description: [view in Spanish][edan-image:id=siris_sic_7144,size=200,right]During construction of the Panama Canal at the start of the century, many laborers died of malaria and yellow fever. To find ways to control the diseases, North American biologists came to the isthmus of Panama. Some of these scientists were so impressed by the diversity of the natural environment that they later
Description: Established in 1890, the Smithsonian Astrophysical Observatory was one of the earliest observatories to practice the "new astronomy," or astrophysics. Originally located behind the Smithsonian Institution Building, the Castle, in 1955, the Observatory moved to Cambridge, Massachusetts. Today, the Harvard-Smithsonian Center for Astrophysics has observing stations in Arizona,