Description: Have a little fun with images from our collections that have been designated as open access. Anyone can now download, transform, share, and reuse millions of images as part of Smithsonian Open Access.
Description: Joseph Henry,the first Smithsonian Secretary, served from 1846 to 1878 and was a physicist who conducted pioneering research in electromagnetism.
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
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