geological

AlUla, one of Saudi Arabia's oldest cities, is home to a multitude of fascinating ancient monuments

PETM which resembles current and future warming, occurred 56 million years ago and was one of the largest and fastest global warming events.

Researchers emphasize the quick and dramatic changes occurring in the Amazon as a result of growing human activities in two distinct reviews.

New research has provided the strongest evidence yet that the earth's continents were formed by giant meteorite impacts