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How Long Do Volcanoes Erupt?
The length of a volcanic eruption can vary dramatically, and some eruptions have been known to last continuously for decades. Learn about the lack of ability in predicting the length of volcanoes...
How Do Volcanoes Erupt?
The process of a volcano erupting begins with the generation of magma, which then migrates towards the surface until the pressure and temperature can equalize. Find out why sometimes there is...
Signs of a Volcano Erupting
Signs that a volcano may erupt include small seismic shocks, ground swelling and releases of gas, steam or ash. Discover why most signs of volcanoes can't be detected without instruments with help...
How Do Underwater Volcanoes Erupt?
An eruption of an underwater volcano, which causes pillow basalts, is the same as an eruption on land, except that the eruption cools more quickly. Learn about underwater gas eruptions from...
How Often Do Volcanoes Erupt?
Volcanoes can erupt only once, but other volcanoes, such as Kilauea, can erupt continuously for almost 30 years. Discover how those who study volcanoes define active volcanoes with help from the...
How Does Hail Form?
Hail forms with an uplift that involves air rising, cooling and condensing as the temperature goes down. Discover how hail can get larger through winds that pick it up and coat it with more ice...
How the Moon Affects the Changing of the Tides
The gravitational pull of the moon and the rotation of the earth, coupled with the centripetal force of the earth, causes two high tides and two low tides throughout the day. Find out why the...
What Pollutes the Air?
Pollution in the air can be caused by substances that are both man-made and natural compounds. Find out how air pollution can be caused by volcanic eruptions with help from the chair of a...
What Causes Wind-Driven Currents?
Wind-driven currents are caused by the return of large circulation cells, of which there are three between the equator and the poles. Find out how circulation cells also move heat over the planet...
How Thunderstorms Form
Thunderstorms are essentially caused by differences in temperature and pressure, and the larger these differences are, the more severe the thunderstorm will be. Learn about electrical disturbances...
How Does Latitude Affect Climate?
Latitude can affect climate through circulation, and the wind bands known as trade winds differ depending on latitude. Discover how the movement of weather systems is controlled by large wind...
How to Make a Home Deer Feeding Video
Simple things you can do to get pictures or video of wildlife feeding in your yard.
What Do Orioles Eat?
Orioles eat both insects and the nectar of flowering shrubs and trees. Find out how orioles migrate in order to find the best feeding grounds with helpful information from an Audubon Society...
What Do Chickadees Eat?
Chickadees eat both insects and grain, as they are often seen high in the treetops looking for larvae as well as around bird feeders eating sunflower seeds. Find out how tiny chickadees survive...
Where Do Robins Live?
Robins live in a variety of habitats, as they have been known to nest right on houses, in the middle of cities and even on the grounds of Alaska. Find out how robins live with helpful information...
Why Do Roosters Crow?
Roosters crow first thing in the morning for a variety of reasons, including protecting their territory, announcing their presence and simply waking up. Find out why roosters crow with helpful...
What Do Young Barn Owls Eat?
Young barn owls eat other nocturnal creatures, such as rats, mice and other nighttime rodents. Find out how barn owls feed with helpful information from an Audubon Society member in this free...
What Do Cardinals Eat?
Cardinals are seasonal eaters, much like most songbirds, as they feed on insects during the summer and seed during the winter. Find out what cardinals usually eat with helpful information from an...
What Do Robins Eat?
Robins tend to switch their diet seasonally, so they eat insects during the summer months and seeds during the winter months. Explore the behavior and feeding patterns of robins with helpful...
What Do Black Hawks Eat?
Black hawks feed on small mammals, snakes, insects and even fish when they can catch them in shallow water. Find out how black hawks survive with helpful information from an Audubon Society member...
What Do Wild Turkeys Eat?
Wild turkeys feed off of the ground, and their diet consists of insects in the summer months and grains in the winter months. Find out how turkeys survive in the wild with helpful information from...
What Do Tree Swallows Eat?
Tree swallows are aerial feeders, meaning they eat flying insects like ballooning spiders, mosquitoes, flies, gnats and flying ants. Discover the attributes of aerial feeding birds with helpful...
What Do Blue Jays Eat?
Blue jays are omnivores, which means that they eat almost any insect, grain, seed or even egg. See why people view blue jays as pesky predators with helpful information from an Audubon Society...
What Are Robin Nests Made Of?
Robin nests are made of mud that is reinforced with grasses, leaves and twigs. Identify a robin's nest, which is very common to see, with helpful information from an Audubon Society member in this...
What Do Cowbirds Eat?
Cowbirds often eat insects and arthropods in warm weather, but they will feed on grain in the winter months. Find out more about the behavior and migratory patterns of cowbirds with helpful...
What Do American Goldfinches Eat?
American goldfinches are generally seed eaters, and they are particularly fond of niger thistle seed, but they will also eat small insects when they are nesting. Learn more about the American...
What Does a Tanager Look Like?
A tanager is brightly colored, usually red, and it often eats caterpillars and insects it finds along the ground. Explore the different species of tanagers with helpful information from an Audubon...
What Is Bird Banding?
Bird banding is a method of applying a numbered band to the ankle of capture birds before releasing them into the wild. See how bird banding aids in important research with helpful information...
What Does the Barn Swallow Eat?
Barn swallows eat small flying creatures, such as flying ants, ballooning spiders, small beetles, flies and mosquitoes. Understand how barn swallows feed with helpful information from an Audubon...
Coral Reef Animals: Red Spotted Horseshoe Worm
Coral reef red spotted horseshoe worms have tentacles that are used as defense mechanisms. Identify red spotted horseshoe worms with tips from a scuba instructor in this free video about coral...
Coral Reef Fish: Blue Runner
Blue runners are school fish that are usually found in deep water, but they can also be found in coral reefs. Identify blue runner fish with tips from a scuba instructor in this free video about...
Coral Reef Fish: Slender Filefish
Slender filefish can dramatically change their colors to blend into their coral reef environment. Identify slender filefish with tips from a scuba instructor in this free video about coral reef...
Coral Reef Fish: Butter Hamlet
Coral reef hamlet fish come in a variety of different colors. Identify butter hamlet fish with tips from a scuba instructor in this free video about coral reef animals.
Coral Reef Fish: Red Hind
Coral reef red hind fish are a member of the grouper or sea bass family. Identify red hind fish with tips from a scuba instructor in this free video about coral reef animals.
Coral Reef Fish: Spanish Hogfish
Spanish hogfish are found in shallow coral reef areas and have two upper teeth. Identify Spanish hogfish with tips from a scuba instructor in this free video about coral reef animals.
Coral Reef Fish: White Margate
Coral reef white margate fish are 10 to 20 inches long and swim along the ocean bottom. Identify white margate fish with tips from a scuba instructor in this free video about coral reef animals.
Coral Reef Fish: Surgeonfish
Coral reef surgeonfish have clear spectral fins with a yellowish tint. Identify surgeonfish with tips from a scuba instructor in this free video about coral reef animals.
Coral Reef Fish: Honeycomb Cowfish
Coral reef honeycomb cowfish are awkward swimmers because of their triangular body. Identify honeycomb cowfish with tips from a scuba instructor in this free video about coral reef animals.
Coral Reef Fish: Yellowhead Wrasse
Coral reef yellowhead wrasse fish change colors many times in their lives, which makes them hard to identify. Learn to spot yellowhead wrasse with tips from a scuba instructor in this free video...
Coral Reef Animals: Striped Cleaning Shrimp
Coral reef striped cleaning shrimp are characterized by two red stripes that run down the middle of the back. Identify striped cleaning shrimp with tips from a scuba instructor in this free video...
Coral Reef Animals: Garden Eel
Garden eels are small eels that burrow into sands of coral reefs. Identify garden eels with tips from a scuba instructor in this free video about coral reef animals.
Coral Reef Fish: Porcupine
Like other puffer fish, a coral reef porcupine fish has spines that are used as defense mechanisms. Identify porcupine fish with tips from a scuba instructor in this free video about coral reef...
Coral Reef Fish: Juvenile Spotted Drum
Juvenile spotted drums are one of the most elegant coral reef fish. Identify juvenile spotted drum fish with tips from a scuba instructor in this free video about coral reef animals.
Coral Reef Fish: Bar Jack
Bar jacks are a common coral reef fish that are silver in color. Identify bar jack fish with tips from a scuba instructor in this free video about coral reef animals.
Coral Reef Fish: Gray Angelfish
Gray angelfish are common inhabitants of coral reefs. Identify gray angelfish with tips from a scuba instructor in this free video about coral reef animals.
Coral Reef Fish: Balloonfish
A member of the puffer fish family, a coral reef balloonfish ranges in size from eight to fourteen inches long. Identify balloonfish with tips from a scuba instructor in this free video about...
Coral Reef Fish: Fairy Basslet
Also known as Royal Grammas, coral reef fairy basslet fish are violet, purple and yellow in color. Identify fairy basslet fish with tips from a scuba instructor in this free video about coral reef...
Coral Reef Fish: Red Lionfish
Coral reef red lionfish are striped with red, brown, white or maroon. Identify red lionfish with tips from a scuba instructor in this free video about coral reef animals.
Coral Reef Fish: Saddled Blenny
Saddled blennies are small coral reef fish that have a hopping like motion in the water. Identify saddled blenny fish with tips from a scuba instructor in this free video about coral reef animals.
Good Stone Skipping Technique
Carmen shows us the proper technique to skip our stones in this free video clip.