An earthquake rattled much of the Northeast on Friday morning, with shaking felt across the New York City metropolitan area and in communities from Baltimore and Philadelphia up through New England.

ST. PETERSBURG, Fla. -- The easiest and most straightforward way to measure a hurricane's strength is to use the Saffir-Simpson scale. Watch: Irma Now Second Strongest Hurricane On Record; 185 mph ...

(WHTM) — Residents in Pennsylvania felt shaking Friday morning as a 4.8 magnitude earthquake struck New Jersey. Earthquake reported in New Jersey, tremors felt in Pennsylvania One of the most commonly ...

The ability to measure microgram and milligram masses with extremely high accuracy is often critical in pharmaceutical and chemical industries. This design combines a pickup head from a compact-disc ...

One of the most commonly known earthquake-measuring tools is the Richter Scale, but the system is no longer used today. In fact, the Richter scale was replaced in the 1970s by other magnitude scales ...

The ability to measure microgram and milligram masses with extremely high accuracy is often critical in pharmaceutical and chemical industries. This design combines a pickup head from a compact-disc ...