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small changes to one part of the system can grow to have large effects on the system as a whole
designed by James B
They live almost exclusively in the Southern Hemisphere
Classics Forever
it was not until the 17th century that this view was supported by evidence from the first telescopic astronomical observations
First International Polar Year Karl Weyprecht Mini Sov. Sheet MNH monet small changes to one partMozambique First International Polar Year Karl Weyprecht Mini Sov. Sheet MNH The International Polar Years (IPY) are collaborative, international efforts with intensive research foci on the polar regions. Karl Weyprecht, an Austro Hungarian naval officer, motivated the endeavor in 1875, but died before it first occurred in 18821883. Fifty years later (19321933) a second IPY took place. The International Geophysical Year was inspired by the IPY and was
