منابع مشابه
Experimental medicine 1000 years ago
Little is known about the state of experimentation in the field of medicine during the Medieval Islamic era. With few exceptions, most of the contemporary sources on history of medicine propagate the idea that the roots of experimental medicine in its modern form, including clinical trials and drug-potency studies, first started during the European Renaissance in the 16(th) to the 18(th) centur...
متن کاملA tsunami about 1000 years ago in puget sound, washington.
Water surged from Puget Sound sometime between 1000 and 1100 years ago, overrunning tidal marshes and mantling them with centimeters of sand. One overrun site is 10 kilometers northwest of downtown Seattle; another is on Whidbey Island, some 30 kilometers farther north. Neither site has been widely mantled with sand at any other time in the past 2000 years. Deposition of the sand coincided-to t...
متن کاملCauses of climate change over the past 1000 years
Recent reconstructions of Northern Hemisphere temperatures and climate forcing over the past 1000 years allow the warming of the 20th century to be placed within a historical context and various mechanisms of climate change to be tested. Comparisons of observations with simulations from an energy balance climate model indicate that as much as 41 to 64% of preanthropogenic (pre-1850) decadal-sca...
متن کاملCauses of Climate Change over the past 1000 Years
This copy is for your personal, non-commercial use only.
متن کاملProxy climatic and environmental changes of the past 1000 years
The 1000 yr climatic and environmental history of the Earth contained in various proxy records is reviewed. As indicators, the proxies duly represent local climate. Because each is of a different nature, the results from the proxy indicators cannot be combined into a hemispheric or global quantitative composite. However, considered as an ensemble of individual expert opinions, the assemblage of...
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ژورنال
عنوان ژورنال: New Scientist
سال: 2020
ISSN: 0262-4079
DOI: 10.1016/s0262-4079(20)30670-9