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Aconcagua: Highest Mountain in South AmericaThe Andean peak is also the highest in the Western and Southern hemispheres.
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Great Facts About the Five Great LakesThe Great Lakes — Superior, Huron, Michigan, Ontario and Erie — make up the largest body of fresh water on Earth.
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Lake Ontario FactsLake Ontario may be the smallest Great Lake, but its waters run deep.
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Lake Huron FactsLake Huron has the longest shoreline of the Great Lakes. It is the second largest by surface area and the third largest by volume of water.
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Lake Superior: Facts About the Greatest Great LakeThe largest Great Lake is superior in more ways than one.
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Lake Erie FactsLake Erie, the fourth largest Great Lake, is also famous for a battle in the War of 1812 and for the Erie Canal.
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The Serengeti: Plain Facts about National Park & AnimalsThe Serengeti is a vast ecosystem in east-central Africa.
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Medical Marijuana: Benefits, Risks & State LawsMedical marijuana is legal in some states, but debate rages on about whether the health benefits outweigh the risks.
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Lake Michigan FactsLake Michigan is the only Great Lake located entirely in the United States.
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Denali: Facts About North America's Tallest MountainDenali, formerly known as Mount McKinley, rises more than 20,000 feet above sea level.
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What Is Short-Term Memory Loss? -
Cenozoic era: Facts about climate, animals & plantsThe Cenozoic era began about 65 million years ago and continues into the present.
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Muscular System: Facts, Functions & DiseasesThe 650 muscles in the human body control movement and help to maintain posture, circulate blood and move substances throughout the body.
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Digestive system: Facts, function & diseasesThe human digestive system converts food into nutrients that the body needs.
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Camel Milk: Nutrition Facts, Risks & BenefitsSome experts say camel's milk may help fight a number of diseases, including diabetes, cancer, shingles and autism.
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Hurricane Katrina: Facts, Damage & AftermathThousands died and millions were left homeless in the most destructive storm to hit the United States.
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PTSD: Causes, Treatment & SymptomsPost-traumatic stress disorder (PTSD) can occur after a person experiences a traumatic event, such military combat, a natural disaster, or a crisis such as 9/11.
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How to Take Your PulseThe pulse rate measures the rate at which blood pressure increases throughout the body. There are several places on the body where you can find your pulse.
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Memory Definition & Types of MemoryMemory involves encoding, storing, retaining and subsequently recalling information and past experiences.
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Episodic Memory: Definition and ExamplesEpisodic memory is a person’s unique memory of a specific event; it will be different from someone else’s recollection of the same experience.
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Procedural Memory: Definition and ExamplesAs the name implies, procedural memory stores information on how to perform certain procedures, such as walking, talking and riding a bike, without having to consciously think about them.
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Implicit Memory: Definition and ExamplesImplicit memory uses past experiences to remember things without thinking about them, like how to ride a bike or button a shirt.
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Declarative Memory: Definitions & ExamplesDeclarative memory, or explicit memory, consists of facts and events that can be explicitly stored and consciously recalled or "declared."
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Semantic Memory: Definition & ExamplesSemantic memory is the recollection of nuggets of information we have gathered from the time we are young.
