This educational article introduces young people to the biology of amphibians. It describes the differences between frogs, toads, salamanders, newts, and others and explains the amphibian life cycle in clear, easy-to-understand language.
To understand how the structures and functions of living organisms work, you must study the process of respiration and the action of enzymes. This article gives a detailed explanation of this vital aspect of biology with clear, concise text accompanied by diagrams, illustrations, and videos.
More than two-thirds of the earth's surface lies beneath the oceans. Where the land rises above sea level it forms continents and islands. An island is a piece of land, smaller than a continent, that is surrounded by water. This article explores 10 fascinating facts about oceans and islands.
The ocean floor is the largest landscape on Earth. Beneath the oceans are mountains as high as the Himalayas, rugged mountain ranges longer than any on land, vast plains, deep canyons, and trenches plunging thousands of yards into the earth's crust. Most of this landscape is still unexplored.
At any point on the earth's surface, if you dig down far enough, you will come to rock. Rocks are the building blocks of the earth's crust. There are many different types of rock, and they are all composed of one or more minerals. This article explores 10 fascinating facts about rocks and minerals.
Volcanoes occur where magma (molten rock) from deep inside the earth forces its way to the surface. The magma may erupt as red-hot lava, or may explode into clouds of ash and volcanic bombs. Volcanic activity also produces strange landscapes of gushing geysers, steamy lakes, and bubbling mud pools.
The continents are the seven huge land masses that make up most of the earth's land surface. They are always on the move, shifted around by forces deep inside the earth. The concept of moving continents is known as "continental drift". The study of these movements is called "plate tectonics".
The Earth is one of the nine planets in our solar system. It is the fifth largest of these planets and the only one with enough oxygen and water to support life as we know it. This article explores 10 fascinating facts about our home planet from the inner core to the outer atmosphere and more.
Chunks of rock and metal, lumps of ice, and clouds of dust float far and wide in the solar system. Scientists classify these wandering objects as comets, meteors, and asteroids. Rocky asteroids sometimes crash into planets or their moons, causing massive craters.
More people are living alone than ever before. But being alone doesn't mean you have to feel lonely. This article explains seven powerful ways to live alone and still feel happy and connected.
Preschoolers have changing psychological, emotional, and dietary needs. This can make mealtimes challenging. But it's an opportunity to encourage them to choose and enjoy healthy, nutritious food. This article explains three easy strategies to make healthy food fun and interesting to young children.
Diaper rash is one of the most common ailments in infants. Most forms are easily treated with lotions available from the drugstore. But there are more severe conditions which may need medical attention. This article explains how to recognize the problem and what to do if your baby is suffering.
You may dream of starting your own business. But how do you know if you're ready? This article presents a 5-point test which will help you decide if you have what it takes to be a successful entrepreneur.
Up to a third of all dogs in the USA are fed dietary supplements. But does your dog need added vitamins and minerals? Do they even work? This article examines the facts about vitamin and mineral supplements for dogs based on information from the Food and Drug Administration and scientific research.
Building an audience for your niche web business through paid advertising and promotion can feel like throwing good money after bad. But the most effective strategies to drive laser-targeted traffic to your niche website are free. This article explains all these strategies and how to deploy them.
Changes in diet are the long-term solution to your dog's skin problems, but giving the right dietary supplements can boost him back to health in the short-term. This article explains when to give dietary supplements to your dog, which supplements to choose, and how to administer the correct dosage.
Many weight loss programs involve taking pills, cutting out food-groups, or buying expensive products. You may get short-term results with them, but put the weight back on afterwards. Fad diets are unhealthy and unsustainable. This article offers 10 genuine steps to healthy, long-term weight loss.
All small businesses need an efficient marketing strategy. Developing a product or service is only the first step. This article explains five free ways small businesses with limited resources can develop a marketing strategy which costs little and brings a measurable, positive return on investment.
You must choose a healthy diet for your dog. By law, dog food labels must list ingredients and the relative amounts of protein, fat, fiber, moisture, and nutrients. This article explains in detail what everything on the nutritional label means.
Difficulty sleeping spoils your day, undermines relationships, and makes you less effective at work. Many causes of sleep problems relate to your lifestyle. This article explains 13 gentle but effective changes you can make to help you get a good night's sleep and wake refreshed and raring to go.
Any business, large or small, can benefit from making video marketing part of its core strategy. But it's important to understand what works and what doesn't. This article explains five proven strategies you can use to build your brand, drive traffic, and increase sales, video marketing on YouTube.
Many dog owners like to know exactly what their pooch is eating. While commercial dog food should provide a healthy, complete, balanced diet, you may want to prepare your dog's meals from scratch. This article explains everything from choosing a good recipe to food preparation and health-checks.
In ancient times our ancestors observed the night skies, grouping the stars together into constellations and naming them. The word “constellations” simply means “stars together”. We've studied these patterns now for thousands of years. This article explores 10 fascinating facts about the night sky.
While dogs enjoy snacks and treats, it's important to avoid over-feeding your dog or damaging his health. This article discusses the pros and cons of giving snacks and treats to your dog, which foods to avoid, how to choose safe store-bought treats, and healthy alternatives to manufactured snacks.
You must choose the right diet to keep your dog healthy. While most commercial foods offer complete and balanced nutrition, you need to know how much and how often to feed. Dogs' needs change with breed, size, age, and health. This article offers feeding guidelines for each stage of your dog's life.
Choosing a collar and leash for your dog can be daunting, but a leash is a legal requirement in most places. Leashes are a training tool and keep your dog and other animals safe. This article discusses different kinds of collars and leashes to help you make the right choice for you and your dog.
People in favor of a raw food diet for dogs claim it's more natural and healthy. Those against say it's dangerous because of the risks of poor nutrition and bacterial infection. This article examines the scientific evidence based on recent studies of raw food diets for dogs.
Dogs' dietary needs depend on breed, size, and age. Choosing the right diet for your pet's life stage is important to keep him in good condition. This article explains what the best adult dog feeds are, how to tell if your dog is a healthy weight, and when you should take him to the vet.
This article explains how to make sure your dog gets the right amount of water for his breed, age, size, and condition. It describes signs of dehydration to look out for, medical issues which can cause dehydration even when a dog has access to water, and advice on when to take your dog to the vet.
This article explains the history and biology of working dogs. I'll show why they have the remarkable strength and stamina which have made them so important to humans over the millennia.
Dogs have been in search and rescue for centuries. Highly skilled and brave animals save hundreds of lives each year. They work in situations from natural disasters to war zones. This article explains what these extraordinary dogs do and the situations in which they work so courageously to help us.
Stars have fascinated humans for thousands of years. Our nearest star, the sun, is the source of energy for all life on Earth. Stars have inspired music, art, poetry, and scientific investigation. This article explores 10 of the most interesting and fun facts about stars.
The known Universe contains 100 billion galaxies grouped in superclusters and separated by empty space. This article explains what the Universe is, how it started, what it's made of, and what its future might be.
Investigative skills play an important part in learning practical biology. Experiments are important in the scientific method. This article teaches good experimental design for young biologists.
No matter how healthy you are, at some time, you'll suffer from flaky skin, spots, zits, scabs or pimples. Here is a lighthearted look at some icky skin stuff!
This article explains with clear text, illustrations and videos all about diffusion, osmosis, active transport, surface to volume ratio and the temperature and concentration gradients in cell biology.
We take it for granted that we can look out of our homes through glass windows and walk in and out through lockable doors. But when were the first windows made? Have we always had doors? Find out now!
Many modern houses are built of bricks, mortar and concrete. Who invented bricks? When were they first used? How is concrete made? This article explores the history of these common building materials.
What is biology? What is life? What is a cell? How are varieties of living things organized? This article explains basic biology in clear, easy-to-understand language with photos, videos and a quiz.
Parasites are everywhere. They live on your skin, in your hair and even inside you! Some are harmless, many are necessary for health, and a few are DEADLY. Let's find out more about crazy PARASITES...
This daring study asked moms to evaluate themselves as mothers. Then they asked the kids what they really thought of their moms. Sit down and take a deep breath. This is what happened.
Properly named The United Mexican States, Mexico is the biggest country on the land bridge connecting North and South America. A complex region with a rich cultural and political history. Bienvenido!
Since ancient times, the Moon has fascinated and inspired people. The Moon is often associated with magic and mystery. Now science has unveiled those mysteries. Ready for a moonwalk? Read on!
Gold has fascinated humans since it was first discovered. It has inspired love, poetry, art and music, as well as greed, murder and warfare. Discover about gold with these amazing facts, pics and videos!
Spiders both fascinate and frighten people. Check out these weird, amazing, interesting and fun facts about spiders taken from science, history, literature and mythology with cool photos and videos.
Modern art is often misunderstood. Let's sort out the facts from the fiction, exposing popular myths and finding out the truth about the history, styles and most famous practitioners of modern art.
At the dawn of civilization, people worshiped the Sun as a divine being. Today, science has solved many of its mysteries. Here are ten fun, interesting and surprising facts about our nearest star.
Everyone's heard of the Wild West, but what was it that made it so wild? Lawlessness? Crazy characters? New inventions? The lure of gold? Wars between natives and settlers? Read on to find out.
Everyone that ever lived and everything they did has contributed to our history. It's the story of people on this planet. Historians are time-detectives, looking for clues to find out about the past.
"I'm bored," you say. But what is boredom and why does it happen? Exploring the scientific perspective leads to surprisingly helpful insights that might banish boredom forever. Interested ? Read on...
Parents are delighted when their babies first start to laugh. But why do babies laugh? What do they laugh at? With some wonderful video footage and a bit of science, everything is explained here.
Charles Dickens, like his character, Oliver Twist, knew from experience the meaning of poverty. Let's take a look at the social history that forms the background to the most famous of all his books.
Birds are among the most beautiful creatures on Earth. They're also some of the weirdest! Check out these crazy-but-true interesting and fun facts about our feathered friends...you'll be amazed!
Winter, 1926. In his tiny London laboratory, John Logie Baird turned down the lights on his small, invited audience. Moving images appeared in the darkness. The audience gasped. Television was born...
Alexander Graham Bell's invention of the telephone revolutionized 19th century communication and was the precursor to the development of of the satellite mobile communications revolution of today...
Gutenberg's printing press was a great historical event. Before it, all books had to be laboriously hand copied. His invention sparked a cultural revolution that would change the world forever.
Marina Abramović and Ulay met in the 70s. Passionately in love, they lived, worked and performed together for many years. When they parted, they thought it was forever. Until this extraordinary day.
Michael Faraday, the son of an 18th Century blacksmith, became one of the greatest scientists of his age. One of his discoveries transformed the world and changed the way we live forever.
Toilet paper is something we use every day, but how much do you know about it? You might be surprised at just how many fun facts there are to learn about it. See how many of these you already knew!
Magazines, books, art materials, toilet tissue, wall-coverings, tickets, posters, packaging and even money are all made from paper. But where does paper come from, who invented it and how is it made?
The Chinese Tangram Game is a cool activity to do with kids that has great educational value and is loads of fun to play. Find out its history, how to make your own, and the fun you can have with it!