The initial magnitude scale was established by Greek astronomer Hipparchus around 135 B.C.E., categorizing approximately 850 stars into six ranges from 1st (brightest) to 6th (faintest) magnitude.

Manila, Philippines — A 7.4-magnitude earthquake Friday morning off the southern Philippines killed at least two people, damaged a hospital and schools, knocked out power and prompted evacuations of ...

MANILA, Philippines — A powerful magnitude 7.4 earthquake struck offshore in the southern Philippines on Friday, killing at least two people, while towns near the epicentre suffered structural damage ...

MANILA, Oct 10 (Reuters) - Two powerful offshore earthquakes struck off the southern Philippines on Friday, killing at least seven people, while towns near the epicentre suffered structural damage and ...

Manila, Philippines — At least 69 people were killed in a powerful earthquake that hit a central Philippine province Tuesday night. The magnitude-6.9 quake hit at about 10 p.m. and trapped an ...

A powerful offshore earthquake with a magnitude of 6.9 struck the central Philippines late Tuesday, collapsing walls of houses and buildings, killing at least 20 people and injuring many others, ...

A strong, 6.9-magnitude earthquake struck in the Visayan Sea on Tuesday, according to the United States Geological Survey. The temblor happened at 9:59 p.m. Philippine time about 7 miles southeast of ...

The quake hit about 17 miles east of Jalalabad, near the border with Pakistan. LONDON -- A 6.0 magnitude earthquake struck eastern Afghanistan, destroying several villages, killing at least 812 people ...

SARATOGA SPRINGS — The road less traveled to the Travers this year went through Altoona, Iowa. Trainer Steve Asmussen and owner Ron Winchell appeared to have one of the better 3-year-olds early this ...

Speed figures play an essential role in helping horsemen find the right races for their runners. Yet races are not always won on paper. Class can be the great equalizer in horse racing as fast horses ...

Experts say vertical ocean floor movement determines tsunami size. When a magnitude 8.8 earthquake rocked Russia's Kamchatka Peninsula on Tuesday, officials warned that damaging tsunami waves could ...

An 8.8 magnitude earthquake struck off Russia's Kamchatka Peninsula, triggering tsunami warnings across the Pacific. The quake, the largest since the 2011 Tohoku earthquake, occurred on a "megathrust ...