link See hyperlink. Linux A UNIX®-like, open-source operating system developed primarily by Linus Torvalds. Linux is free and runs on many platforms, including both PCs and Macintoshes. Linux is…
Amazons, Vandals, Vikings—what do they have in common? Do you know they were all warriors? Add guerrillas, kamikazes, and conquistadors and you have quite a group. Who were they? When and where did…
U.S. News | Business/Science News Here are the key events in world news for the month of February, 2009. Iceland Swears in First Female Prime Minister (Feb. 1): Johanna…
The System of Checks and Balances
In 1787 leaders of the states gathered to write the Constitution-a set of principles that told how the new nation would be governed.
The leaders of the states…
HOW ELECTRICITY DELIVERS ENERGYNETWORK CONTROL CENTRESOLAR POWERFIND OUT MOREElectricity comes to homes and workplaces through a huge network of power stations and cables. When the supply fails,…
SOAKING UP FOODYEAST-COVERED GRAPESEXPLODING PUFFBALLMOULDSLICHENSFIND OUT MOREFungi grow without sunlight and feed on organic matter. A typical fungus is made of many threads growing on or in…
POUCH BABYCICHLID FISHWOODLICE EXOSKELETONWILDEBEESTBLUE TIT NESTLINGSLOGGERHEAD TURTLE HATCHLINGSELEPHANTSFIND OUT MOREAs animals grow they can change in both their form and their behaviour.…
ORBITING VENUSLANDING ON EROSDESTINATION SATURN AND TITANMARS EXPLORATIONFIND OUT MOREScientists launch interplanetary missions to study the planets, asteroids, and comets close up. Mariner 2…
FRACTURED CRUST PLATE BOUNDARIES SUPERCONTINENT SEA-FLOOR SPREADING FIND OUT MORE
Scientists believe that the Earth’s outer crust is made up of about huge fragments, called tectonic plates…
DECANTING GOLDDISTILLATIONFILTRATIONCHROMATOGRAPHYFIND OUT MOREThe substances in a mixture are separated by the differences in their physical properties, such as their particle size. The more…
