Hegedűs Anita

During the ice age, environmental changes caused by glaciations and warmings, followed by further cooling, led to regular cycles of change in vegetation in a given […]

The ice spread from the poles towards the equator. In the high mountains, the boundary of perpetual snow has moved lower. Vast body of seawater froze […]

During the Pleistocene, the megafauna was diverse all over the world. Most continental ecosystems had similar or greater biodiversity in megafauna than modern African ecosystems. During […]

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 […]