31
Oct
Marie Curie vs Nobel record
by cathybdouglas
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She is the only person to receive 2 Nobel prizes. In WWI, Madame Curie designed mobile X-ray units–think ambulances with x-ray machines–for emergency medicine on...
01
Aug
Washington & 300 slaves
by cathybdouglas
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Before marrying George Washington, Martha was already a rich, Virginia widow with acreage and slaves. George had slaves, too, and once elected president, the family...
09
Jul
galaxy vs solar system
by cathybdouglas
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A Solar system comprises a sun and its orbiting planets along with all the moons and space objects–including space dust–that also orbit the sun. There...
26
Jun
Manhattan map made easy
by cathybdouglas
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It’s a grid. Streets run east-west. Avenues run north-south. Famous Fifth Avenue is the center line. Streets lined up east of Fifth Ave are called “east”...
13
Jun
ravens & crows are intelligent
by cathybdouglas
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These birds figure out puzzles, make and keep tools, and ravens even punish other ravens who aren’t acting nice. The punishment includes purposefully not interacting...