Why Did the Discoveries of the Renaissance Make Little Practical Difference to Medical Treatment Between 1500-1700?

Siberia occupies about 5.2 million square miles, which roughly corresponds to about 9 percent of Earth's dry land mass. It is bounded by the Ural Mountains in the west and by the Pacific Ocean in the east. To the south lies central Asia, Mongolia, and China, and to the north the Arctic Ocean. For many people Siberia is synonymous with an intensely cold climate, but this image is only partially correct. The climate of most of Siberia is continental, which means there are large temperature differences between summer and winter. The Siberian winter is indeed long and cold, yet summers are fairly warm—warm enough to allow for the cultivation of watermelons in western and southern Siberia. Although there is relatively little precipitation in eastern Siberia, and the winter frost penetrates quite deep, the climate becomes milder and warmer towards the west and south. Due to heavy rainfall, the region is drained by numerous rivers and dotted with lakes filled with a variety of fish.
Siberian tigers are massive carnivores living in the earth's coldest areas. Siberian tiger or Amur, the world's largest cat, is amongst the most endangered species. Nowadays, these magnificent animals are mostly found in southeastern Russia. Their number in China and Korea has reduced a lot because of illegal poaching. It is estimated that around 350 - 400 tigers are left in the wild and 490 are there in zoos.
Read more at Buzzle: The local people living in Siberia have great respect for these tigers. The Tungusic people refer to the Siberian tigers as 'Old Man' or 'Grandfather', while the Nanai people have named them as 'Amba'.
Unlike the Bengal tiger, Siberian tigers are rarely man-eaters. Only six incidents of man-eating have been recorded in the whole of the 20th century