According to a recent study, events geologists use to distinguish transitions between geological chapters in Earth's story follow a hidden hierarchical pattern, one that could shed light on both past ...

The pattern of geological boundaries may not be as unstable as people have thought, as these boundaries exist between geological wedges of time, like eons, periods, and epochs. Each of these wedges is ...

Researchers have analyzed the shifting patterns of entire dune fields on Earth and Mars, as seen from orbit, and found they are a direct signature of recent environmental change. This new tool can be ...

(A–B) Locations of mapped dune fields on (A) Earth and (B) Mars. (C–D) Examples of mapping and interaction identification on (C) linear dunes in Tanami Desert, Australia, and (D) crescentic dunes at ...