Experts: Mayas may have used chocolate as spice

Archaeologists say they have found traces of 2,500-year-old chocolate on a plate in the Yucatan peninsula, the first time they have found ancient chocolate residue on a plate rather than a cup, suggesting it may have been ...

Ultrafine processing technology continues its evolution

The performance of optical and electronic components such as lenses and semiconductors is strongly influenced by the precision of surface grinding, which involves shaping the surface, and polishing, and provides the product ...

What the locals ate 10,000 years ago

BYU archaeologists find a Utah site occupied by humans 11,000 years ago.The researchers documented a variety of dishes the people dined on back then.Grind stones for milling small seeds appeared 10,000 years ago.