10 stunning jewelry gifts from Blue Nile’s Valentine’s Day sale — up to 50% off
You'll fall head over heels for all kinds of pieces — earrings, necklaces, bracelets, rings — at every price point, starting ...
Archaeologists Uncover Unusually Large Chunk of Rare ‘Egyptian Blue’ in Nero’s Palace
The archaeologists unearthed two tubs that, among other things, were used to process the colorful pigments while the palace ...
Scientists Decode the Secret of Unusual Blue Rings in Norway’s Trees
Blue growth rings in woody plant stems indicate years when cells failed to lignify properly due to summers that were too cold ...