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The earliest known fleas lived in the Middle Jurassic; modern-looking forms appeared in the Cenozoic. Fleas probably originated on mammals first and expanded their reach to birds. Each species of flea specializes, more or less, on one species of host: many species of flea never breed on any other host; some are less selective.
The most infamous flea-to-human transmitted disease is the bubonic plague, which was caused by the bacterium Yersinia pestis. The plague, fevers, tularemia: The diseases fleas can carry and how to ...
The human flea (Pulex irritans) – once also called the house flea [1] – is a cosmopolitan flea species that has, in spite of the common name, a wide host spectrum. It is one of six species in the genus Pulex ; the other five are all confined to the Nearctic and Neotropical realms . [ 2 ]
The Coast to Coast AM late night radio talk show helped popularize modern beliefs in shadow people. [3] The first time the topic of shadow people was discussed at length on the show was April 12, 2001, when host Art Bell interviewed a man purporting to be a Native American elder, Thunder Strikes, who is also known as Harley "SwiftDeer" Reagan ...
An open (single envelope) CFL [12] An encapsulated/closed (double envelope) CFL. Some fluorescent lamps emit ultraviolet radiation. [citation needed] The Health Protection Agency of the United Kingdom has conducted research concluding that exposure to open (single envelope) compact fluorescent lamps (CFLs) for over 1 hour per day at a distance of less than 30 cm can exceed guideline levels as ...
Tunga penetrans is a species of flea also known as the jigger, jigger flea, chigoe, chigo, chigoe flea, chigo flea, nigua, sand flea, or burrowing flea. It is a parasitic insect found in most tropical and sub-tropical climates. In its parasitic phase it has significant impact on its hosts, which include humans and certain other mammalian species.
The werewolf trials. While most people know of the witch trials that took place in Europe and in the American colonies (including Salem, Massachusetts) during the 1500's and 1600's, few are aware ...
An optical illusion known as the Brocken spectre is a plausible explanation for the legend. [13] A Brocken spectre, also called a "mountain spectre", can occur in certain atmospheric conditions when the sun is at a particular angle. The subject's shadow can be cast onto a cloud bank around them, creating the illusion of a large shadowy humanoid ...