The northern lights are potentially visible tonight. Where and how to see them.

The aurora borealis, commonly known as the northern lights, is a natural light phenomenon visible in the night sky, most ...
IEEE

Usage of Clustering of Paley Graphs in Polar Coordinates for the Development of New Network on Chip Topologies

Abstract: The article presents a study of clustering of Paley graphs with the arrangement of prime numbers in polar coordinates and a comparison of the resulting groups in terms of their static ...
IEEE

Optimization via gradient oriented polar random search

Abstract: Search algorithms are often used for optimization problems where its mathematical formulation is difficult to be analyzed, e.g., simulation optimization. In literature, search algorithms are ...
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Laerke the polar bear plays with pumpkin at Point Defiance Zoo, Tacoma, USA

On October 19, 2025, in Tacoma, Washington, USA, @PtDefianceZoo shared a video of Laerke, a polar bear, enjoying a pumpkin at the zoo. In the video, Laerke hugs the pumpkin in the water, carries it in ...