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What is an “exotic” fish?

Source: National Marine Fisheries Services' Northeast Fisheries Science Center     The most often quoted estimate is 20,000. There may be as many as 20,000 more. Which is the oldest type of…

Annelida

(Encyclopedia) CE5 A. The earthworm, Lumbricus terrestris, representative of the phylum Annelida. B. Internal anatomy of an earthworm. AnnelidaAnnelidaənĕlˈĭdə [key] [Lat., anellus=a ring],…

Dinosaur Fossils (By U.S. State!)

Top of Page Source: iStockMost people are familiar with their state’s official flower and flag, but did you know that almost every state has an official fossil as well? These state symbols are a…

rabbit

(Encyclopedia) rabbit, name for herbivorous mammals of the family Leporidae, which also includes the hare and the pika. Rabbits and hares have large front teeth, short tails, and large hind legs and…

Audible Snowflakes and Other Discoveries

More science highlights discovered in 2000 by Otto Johnson More Discoveries IntroductionIce Age Haute CoutureAntisocial Brain Tissue DeficitNew Orleans, the New Atlantis?First…

Anatomy and
Physiology: Can You Hear Me Now?

Can You Hear Me Now?Anatomy and PhysiologyThe SensesWindows to the SoulCan You Hear Me Now?The Nose KnowsDon't Be So Touchy! There is an elegant, mechanical simplicity to sound. Sound is…

Microevolution and Macroevolution: Speciation

SpeciationMicroevolution and MacroevolutionIntroductionMicroevolutionSpeciationMacroevolution According to the theory of natural selection, speciation is the creation of new species by genetic…