ARE ARTERIES AND VEINS DIFFERENT? WHAT ARE CAPILLARIES? BLOODFIND OUT MOREThe heart, BLOOD, and blood vessels make up the circulatory system, which supplies the body with oxygen and nutrients,…
WHEN DO ANIMALS USE VISUAL SIGNALS? WHY DO ANIMALS COMMUNICATE WITH SOUND? DO ANIMALS ALWAYS TELL THE TRUTH? WHY DO ANIMALS USE PHEROMONES? FIND OUT MOREAnimals communicate with their own kind…
WHAT IS ELECTRICITY? HOW MANY FORMS OF ELECTRICITY ARE THERE? HOW DO MATERIALS BECOME CHARGED? ELECTROSTATIC INDUCTIONFIND OUT MOREA lightning strike demonstrates the incredible energy of…
WHAT IS NEPTUNE MADE OF? TRITONFIND OUT MORENeptune is 30 times farther from the Sun than Earth, and has the most powerful hurricanes of any planet in the Solar System. It is a gas giant with faint…
Running style of an ostrichHow a Tyrannosaurus stood upNo-one has ever seen a dinosaur in action. However, the bones and the joints of fossilized skeletons can give us clues as to how the animals…
ICE SHEETSFIND OUT MOREAbout one-tenth of Earth’s dry land and one-eighth of its oceans are covered with ice. This ice is made of snow that collects and becomes compacted (pressed down).…
MAKING FOOD AND OXYGENFOOD-PRODUCING CELLSCHLOROPLASTFIND OUT MOREUnlike animals, most plants do not need to find food, because they can make it for themselves. Plants use energy from sunlight…
SOYUZ LAUNCH VEHICLEHOW ROCKETS WORKSATURN V THREE-STAGE MOON ROCKETBIOGRAPHY: ROBERT GODDARD American, 1882-1945FIND OUT MOREThere would be no space exploration without rockets, but they are…
HOW SATELLITES WORKSATELLITE COMMUNICATIONSORBITSFIND OUT MOREAn object that circles another in space is called its satellite. Earth has one natural satellite, the Moon, but a swarm of…
East Timor, Malta, Paraguay, Togo, Tonga and Zimbabwe compete in the Winter Olympics for the first time. Related Links 2014 Winter Olympics Memorable Olympic Moments…
