Learn about some of the strange and unusual facts and terms in the animal kingdom.

10 Virus Carriers

Explore these killer outbreaks pictures and delve into the real human drama of deadly diseases.

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  • How Aquaculture Works

    How Aquaculture Works

    Where do we get all the fish and other seafood that we eat? How do fish farmers keep up with the heavy demand? See more »

  • How Bioluminescence Works

    How Bioluminescence Works

    While humans try to create a variety of different types of light, some animals make their own. Find out what bioluminescence is and how these animals create light. See more »

  • How do animals communicate?

    How do animals communicate?

    All animals might not be able to speak, but they certainly have other ways of communicating. How do animals pass on information to their own species, and how do they pick up cues from other members of the animal kingdom? See more »

  • How do fish rise and sink in the water?

    How do fish rise and sink in the water?

    Fish have the ability to move in any direction in the water. In fact, they have the ability to rise and sink while swimming through the water. What allows a fish to rise and sink? Find out the answer to this question in this article. See more »

  • How Dog Shows Work

    How Dog Shows Work

    The droopy-faced bloodhound. The prancing poodle. The small Maltese you could easily mistake for a mop. How can these impossibly different dogs compete for the same prize? See more »

  • How Earthworms Work

    How Earthworms Work

    You'd think that earthworms are good for fish bait and little else, but that isn't the case at all. Earthworms are the engines that help local ecosystems run. They aerate soil, help facilitate plant composition and so much more. See more »

  • How Guide Dogs Work

    How Guide Dogs Work

    These canines are more than just your average furry friends: They can mean a whole lifestyle change for some people. See more »

  • How Hibernation Works

    How Hibernation Works

    Walking, breathing, thinking: All of these activities burn energy. But in the winter when food supplies are scarce, some animals conserve their energy -- by hibernating. See more »

  • How Mad Cow Disease Works

    How Mad Cow Disease Works

    Mad cow disease is in the news again, with tests confirming the second case in the United States since December 2003. Learn how this brain disease affects livestock and people. See more »

  • How many insects are there on Earth?

    How many insects are there on Earth?

    Whether you're talking about a swarm of bees buzzing about, a cluster of butterflies sucking down nectar or a nest of cockroaches hidden in a corner of your house, insects are really plentiful. How plentiful? See more »

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