Around 55 million years ago, Earth experienced one of the warmest climates in its history. This period, known as the early ...

More than half a billion years ago on a frigid, ice-covered Earth, glaciers stirred up ingredients for complex life by bulldozing land minerals and then depositing them in the ocean, according to a ...

The rock art is near Nefud desert of northern Saudi Arabia Camels, ibex, gazelles, wild donkeys and aurochs depicted Sept 30 (Reuters) - About 12,000 years ago, hunter-gatherers who inhabited a swathe ...

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