Scabs patch up holes in the skin. Certain cells in our bloodstream recognize when our skin has been broken. These cells, called platelets, start patching the break in the skin and call in other…
inventorBorn: 1919Died: 2005 While at Merck, Hilleman pioneered the development of many of the vaccines commonly used today such as MMR, used to combat measles,…
U.S. public official Born: 1945 After studying at the University of North Carolina and Columbia, he worked as an investment banker before becoming administrator of the Small Business…
Dinosaurs probably communicated both vocally and visually. The chambered headcrests on some dinosaurs such as Corythosaurus and Parasaurolophus might haved been used to amplify grunts or bellows…
Distributor:Weston Woods A child imagines the very worst on his first day of school in this animated version of Mike Thaler’s and Jared Lee’s book. Diana Canova and Jonathan Lipnicki narrate.…
State symbols have been around since 1893, when the World Fair in Chicago featured a National Garland of Flowers with a flower for each of the fifty states. While these flowers didn’t necessarily…
—Holly HartmanMystery Skull In July 2002, an international team led by French paleontologist Michel Brunet announced the discovery of a humanlike skull that may be up to seven million years old,…
Part II: Marcos, People Power, Estrada, and Arroyo by David Johnson and Shmuel Ross 1965 1972 1983 1996 2000 2001 2002 2005 2008 2010 2012 2014 Back: Part I…
From Epidemic to PandemicHIV/AIDSIntroductionThe Birth of a DiseaseFrom Epidemic to PandemicWhere Did HIV Come From?Diagnosis & Anti-HIV TherapyVaccination & Natural ResistanceLessons Learned…
