If you've kept up with the news lately, you've probably heard dire warnings about avian flu, or bird flu. In this article, we'll review the basics of how viruses and influenza work, and we'll learn the answers to these and other questions about avian flu, including whether it is likely to cause a global flu epidemic.
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Cucumber, a trailing vine of the gourd family. Its green fruit -- usually long and warty with crisp, white flesh -- is sliced and eaten raw in salads, or pickled with dill or other spices and eaten as a relish.
As the human population soars, our ability to feed all those hungry mouths can't keep pace. How did an English economist by the name of Thomas Malthus wind up thinking about this very issue in the 19th century, and what's his connection to Darwin?