At the heart of the case against the man accused of the Gilgo Beach killings is DNA evidence — but the novel way that evidence was tested may now determine whether prosecutors can use it against their ...

Bullion dealers and pawn shop owners require appropriate tools to ensure they are providing their customers with pure gold, silver, and other precious metals. Several analytical methods are used to ...

A material’s hardness relates to its mechanical resistance when subjected to mechanical indentation by another harder body. Diamond is considered the hardest natural material and is typically used for ...