The polar cap on Mars shrinks each summer, revealing underlying layers of dust and ice.

Geologists studied polar wander to understand how Earth's rotational axis had shifted over millions of years.

She packed a lightweight polar fleece for the mountain trip, knowing it would keep her warm without adding bulk.

Geologists examined the magnetic polarities preserved in oceanic crust to determine the timing of seafloor spreading.

Linguistics students discussed polar antonyms during their semantics seminar.

This winter, unexpected polar vortexes brought record low temperatures to cities across the continent.

Researchers observed that polar cods migrate earlier in the season due to warming waters.

On clear nights, the polar stars guided the sailors as they navigated the icy waters.

During winter, polar vortices can expand and send frigid air deep into populated regions, disrupting travel and power supplies.

Measurements of spin polarizations in the sample revealed unexpected variations with temperature.