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Were dinosaurs social animals?

Some dinosaurs were social creatures. Recently discovered evidence indicates that they travelled together and that some may even have migrated (because dinosaur fossils have been found above the…

Chuck Taylor

Born: June 24, 1901Converse traveling salesman whose name came to grace the classic, high-top canvas basketball sneakers known as “Chucks” over 500 million pairs have been sold since 1917; he also…

Sojourner Truth Biography

abolitionistBorn: 1797? Sojourner Truth was the most prominent African-American woman in both the abolitionist movement and the early feminist movement. Born a slave called Isabella, some years…

Clyde Vernon Cessna

airplane manufacturerBorn: 12/5/1879Birthplace: Hawthorne, Iowa A pioneer in aviation, he built and flew his first plane in 1911 before organizing the Travel Air Company in 1925. After building…

Osa Johnson

explorer, filmmakerBorn: 1894Birthplace: Chanute, Kans. Osa married photographer Martin Johnson when she was 16 and together the Johnsons traveled to the South Pacific and Africa. Their movies and…

DK Science: Gravity

CENTRE OF GRAVITYFALLING FORCEMASSFIND OUT MOREGravity is the force that makes things fall to the ground on Earth and holds the planets in their orbits (paths) around the Sun. The force of…

DK Space: Extraterrestrial Life

HOW CAN LIFE EXIST ON OTHER PLANETS? SETIFIND OUT MOREExtraterrestrial life means life beyond Earth, or alien life. No life has been found on other planets in the Solar System, but it might exist…

DK Science: Separating Mixtures

DECANTING GOLDDISTILLATIONFILTRATIONCHROMATOGRAPHYFIND OUT MOREThe substances in a mixture are separated by the differences in their physical properties, such as their particle size. The more…

March 2009 Current Events: World News

U.S. News | Business/Science News Here are the key events in world news for the month of March, 2009. President of Guinea-Bissau Killed (March 2): President João Bernardo…