Museum Conservation Institute scientists used a nondestructive technique called X-ray fluorescence spectrometry to analyze ratios of elements in the obsidians. The process works by “exciting” atoms in ...

Schools can hold outdoor graduation ceremonies with physical distancing measures. The changes don’t affect the Washington suburbs, which have opted to reopen more slowly. On July 14, the ...

Discovered in a remote Ottoman town in 1884, the Madaba Map is both a masterpiece of Byzantine design and a working map of Jerusalem and the sixth-century Middle East. A detail of the Madaba Map ...