Новини от света на спелеологията
Sea-ice-free Arctic makes permafrost vulnerable to thawing
New research provides evidence from Siberian caves suggesting that summer sea ice in the Arctic Ocean plays an essential role in stabilizing permafrost and its large store of carbon.
Категории: Новини от света на спелеологията
Illumination drives bats out of caves
Researchers have investigated how the illumination of bat caves affects the animals' behavior and whether the color of light makes a difference on their flight. Although red light irritates the small mammals somewhat less than white light, from the researchers' point of view neither the entrance nor the interior of bat caves should be illuminated if bats are present.
Категории: Новини от света на спелеологията
Human migration out of Africa may have followed monsoons in the Middle East
A new study by geoscientists and climatologists provides evidence that summer monsoons from Asia and Africa may have reached into the Middle East for periods of time going back at least 125,000 years, providing suitable corridors for human migration.
Категории: Новини от света на спелеологията
Bats in attics might be necessary for conservation
Researchers investigate and describe the conservation importance of buildings relative to natural, alternative roosts for little brown bats in Yellowstone National Park.
Категории: Новини от света на спелеологията
Secret of explosive volcanism unlocked
When will the next eruption take place? Examination of samples from Indonesia's Mount Merapi show that the explosivity of stratovolcanoes rises when mineral-rich gases seal the pores and microcracks in the uppermost layers of stone. These findings result in new possibilities for the prediction of an eruption.
Категории: Новини от света на спелеологията
Megadrought likely triggered the fall of the Assyrian Empire
The Neo-Assyrian Empire, centered in northern Iraq and extending from Iran to Egypt -- the largest empire of its time -- collapsed after more than two centuries of dominance at the fall of its capital, Nineveh, in 612 B.C.E. Despite a plethora of cuneiform textual documentation and archaeological excavations and field surveys, archaeologists and historians have been unable to explain the abruptness and finality of the historic empire's collapse.
Категории: Новини от света на спелеологията
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