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: On the evening of October 1, 1847, while using a small telescope on the roof of the family home, Maria Mitchell (1818-1889) spotted a comet where one had not been before. Word of this achievement spread quickly through the scientific community. The American Journal of Science declared her “the first American entitled to the honor of the original discovery of a comet.” Some