As we approach the equatorial regions from the Arctic, the size of bears is decreasing. The largest is the polar bear, followed by the Eurasian brown […]
Cyclical changes in terrestrial elements and their combined effect cause climate oscillations, during which periods of glaciation and warming (glacial and interglacial periods) alternate on Earth, […]
The most recent ice accumulation started about 30 million years ago in the Southern Hemisphere. Glaciation in the north started much later.The last ice age in […]