A PriorityQueue is a list that always keeps its items sorted based on some rule, like smallest to largest. So, when you take an item out, you always get the one with the highest (or lowest) priority.

Open in Viewer Geographic distribution (A), phenotypic population structure (B), and SNP population structure (C) for 840 P. trichocarpa clonal genotypes. (A) Source locations are color-coded by river ...

The Vera C. Rubin Observatory has just released some of its first images. Its powerful new telescope will be able to quickly spot previously unseen astronomical objects.