In a preprint paper, scientists concluded that the Step Pyramid of Djoser in Saqqara, Egypt—believed to be the oldest of the ...

where ancient lake bed sediment outcrops and shoreline deposits are exposed. Most of the early Holocene paleolakes were small, but numerous and widespread (Figure 2b). Some lake basins in North ...

NEW ORLEANS (AP) — Fifteen years after the Deepwater Horizon oil rig exploded off the Gulf Coast, killing 11 and sending 134 ...

Volcanoes have stirred human awe for thousands of years, with their bursts of fire and rivers of molten rock. Yet, beyond the ...