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Hace 3 días · Ice age, any geologic period during which thick ice sheets cover vast areas of land. Such periods of large-scale glaciation may last several million years and drastically reshape surface features of entire continents. A number of major ice ages have occurred throughout Earth history.
Hace 5 días · Read science articles on the ice age, glaciation and climatology. Discover the connection between ice ages and global warming.
Hace 4 días · Little Ice Age (LIA), climate interval that occurred from the early 14th century through the mid-19th century, when mountain glaciers expanded at several locations, including the European Alps, New Zealand, Alaska, and the southern Andes, and mean annual temperatures across the Northern Hemisphere.
Hace 5 días · Climate change - Global Cooling, Ice Age, Human Impact: The Earth system has undergone a general cooling trend for the past 50 million years, culminating in the development of permanent ice sheets in the Northern Hemisphere about 2.75 million years ago.
Hace 5 días · How the Denisovans Survived the Ice Age. A trove of animal bone fragments from a cave on the Tibetan plateau reveals how Denisovans thrived in a harsh climate for over 100,000 years. Excavations ...
Hace 3 días · The oldest such soil was continuously covered by ice for around 2.7 million years, while another, 3 kilometres (1.9 mi) deep ice core from the summit has revealed ice that is around ~1,000,000 years old.
Hace 5 días · The oldest came from a layer that formed roughly 100,000 years ago, and the youngest from a layer that formed between 48,000 and 32,000 years ago. If that were true, it would raise the tantalizing possibility that modern humans and Denisovans had contact on the Tibetan plateau.
