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How A Mosquito Survives A Raindrop Hit - Science News - 0 views

www.sciencenews.org/...squito_survives_a_raindrop_hit

scibyte50 mosquito

shared by Mars Base on 06 Jun 12 - No Cached
  • A raindrop hitting a mosquito in flight is like a midair collision between a human and a bus. Except that the mosquito survives
  • the (relatively) huge, fast drop doesn’t transfer much of its momentum to a little wisp of an insect
  • the falling droplet sweeps the insect along on the downward plunge
  • ...3 more annotations...
  • Mosquito tricks may also inspire engineers designing swarms of tiny flying robots, or interest physicists and mathematicians studying complex fluid dynamics at this scale
  • mosquitoes hit with water survived using an insect version of tai chi:
  • Mosquitoes hitchhiking on water experience acceleration 100 to 300 times the force of Earth’s gravity
Mars Base

Amber discovery indicates Lyme disease is older than human race - 0 views

phys.org/...covery-lyme-disease-older.html

scibyte133 LymeDidease

shared by Mars Base on 31 May 14 - No Cached
  • Lyme disease is a stealthy, often misdiagnosed disease that was only recognized about 40 years ago
  • new discoveries of ticks fossilized in amber show that the bacteria which cause it may have been lurking around for 15 million years
  • The findings were made
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  • studied 15-20 million-year-old amber
  • that offer the oldest fossil evidence ever found of Borrelia, a type of spirochete-like bacteria that to this day causes Lyme disease
  • In a related study
  • scientists announced the first fossil record of Rickettsial-like cells, a bacteria that can cause various types of spotted fever
  • it's worth considering that these tick-borne diseases may be far more common than has been historically appreciated
  • Those fossils from Myanmar were found in ticks about 100 million years old.
  • plant and animal life forms found preserved in amber
  • are very efficient at maintaining populations of microbes in their tissues, and can infect mammals, birds, reptiles and other animals
  • "In the United States, Europe and Asia, ticks are a more important insect vector of disease than mosquitos
  • A series of four ticks from Dominican amber were analyzed in this study
  • In a separate report, Poinar found cells that resemble Rickettsia bacteria, the cause of Rocky Mountain spotted fever and related illnesses
  • This is the oldest fossil evidence of ticks associated with such bacteria
  • Evidence suggests that dinosaurs could have been infected with Rickettsial pathogens
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