How Much Oxygen Is in the Air?Advanced-Level Science ProjectsEarth ScienceHow Much Oxygen Is in the Air?Which Is More Acidic, Snow or Rain? When you step outside and take a big breath of fresh air…
Can You Be a Human Battery?Intermediate-Level Science ProjectsChemistryCan You Be a Human Battery?What Materials Make the Best Crystals? The information presented here will give you a general idea…
Do Objects Float Better in Salt Water Than in Fresh Water?Science Projects for BeginnersPhysical ScienceWhy Do Some Objects Fall Faster Than Others?Do Objects Float Better in Salt Water Than in Fresh…
What Substance Melts Ice Fastest?Science Projects for BeginnersChemistryWhat Household Cleaners Break Down Jell-O Best?What Substance Melts Ice Fastest? Another fun chemistry project is to test a…
Making Invisible InkScience ProjectsJust for the Fun of It!Making Invisible InkMaking Eggs That BounceDo Odor and Bacteria Go Hand-in-Hand?The Sweetest Experiment This simple experiment is great…
(Encyclopedia) Charles the Bold, 1433–77, last reigning duke of Burgundy (1467–77), son and successor of Philip the Good. As the count of Charolais before his accession, he opposed the growing power…
(Encyclopedia) Hobbes, ThomasHobbes, Thomashŏbz [key], 1588–1679, English philosopher, grad. Magdalen College, Oxford, 1608. For many years a tutor in the Cavendish family, Hobbes took great interest…
The United States is home to roughly 40% of the world's billionaires. About 10% of America's richest citizens have committed to participate in the Giving Pledge and donate at least 50% of their…
