Enormous polygon patterns in rock lie dozens of meters below Mars’ surface, ground-penetrating radar data suggest. Similar patterns develop on the surface in Earth’s polar regions when icy sediments ...

NASA's Curiosity rover snapped this view of polygon-patterned bedrock on May 4. Mars is home to a lot of odd-shaped rocks that can look pretty random. Patterns, however, can catch scientists’ eyes.

In remote regions of the Arctic, Antarctica, and the Australian outback, an explorer can trek across bleak, uninhabited landscapes only to suddenly stumble upon ground decorated with weird patterns.

Question: How important is the effect of micro-relief and vegetation type on the characteristics of vascular plants and bryophytes in low-centred polygons? Location: Siberian Arctic, Russia. Methods: ...