Elusive dark matter around clusters of galaxies often clumps into cigar shapes, new observations show. The discovery could help scientists finally understand what makes up dark matter, which is ...

MONTAGNE: Those dark-green shapes hold valuable archaeological information. Ancient structures were often surrounded by trenches for protection and drainage. Even after the structures are gone ...

Recently, though, they wanted to tweak my childhood bedroom because highlighter green isn't the most relaxing hue. This time around, I went with what I thought was the best dark green paint ...