HOW DO ROCKETS WORK? PROPELLANTFIND OUT MORESpacecraft are launched into space by rockets—the only engines powerful enough to overcome Earth’s gravity and lift objects into space. Most spacecraft…
Senate Years of Service: 1870-1871Party: RepublicanREVELS, Hiram Rhodes, a Senator from Mississippi; born in Fayetteville, Cumberland County, N.C., on September 27, 1827; attended Beech Grove…
When You Gotta Go …Anatomy and PhysiologyThe Excretory SystemWaterworksWhere It All HappensReabsorptionWhen You Gotta Go … Okay, so you've made the urine. Now what? You can't keep it forever! So…
—By Borgna BrunnerOmo Is Oldest In 2003 the dating of an Ethiopian Homo sapiens fossil, “Herto Man,” was hailed as a milestone in paleoanthropology. At 160,000 years old, Herto Man was a full 50…
You've Got Some Nerve!Anatomy and PhysiologyThe Central and Peripheral Nervous SystemsYou've Got Some Nerve!Gyri and SulciThe Control CenterSensory and Motor ControlThalamus: The Switching…
Related Links Women's History MonthTimeline: U.S. Women's Rights MovementWomen's Hall of FameFamous Firsts by American Women Biographies Susan B. AnthonyMary McLeod BethuneBarbara…
by Borgna Brunner genocide: from the Greek genos, meaning race; and the Latin suffix -cidium, meaning killing After learning the extent of Nazi atrocities…
The Harlem Renaissance Three writers and their contemporary counterparts by Jace Clayton For many young black writers and artists who gravitated to New York City's Harlem in the…
The Harlem Renaissance Three writers and their contemporary counterparts by Jace Clayton For many young black writers and artists who gravitated to New York City's Harlem in the…
The Harlem Renaissance Three writers and their contemporary counterparts by Jace Clayton For many young black writers and artists who gravitated to New York City's Harlem in the…
