New research has shown that a pigment called Egyptian blue, formulated some 5,250 years ago, can be used as dusting powder to detect fingerprints on complicated surfaces. The earliest known ...
15d
StudyFinds on MSNBlue rings in Arctic trees expose a 150-year log of climate chaosHow extreme weather leaves a lasting mark on trees and shrubs POZNAŃ, Poland — In the Arctic’s harsh borderlands, where trees ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results