Why Do We Say “O’Clock”?

Centuries ago, people said “of the clock” when they told someone the time, as in “six of the clock.” Then in the 17th and 18th centuries, this phrase was shortened to “of …

Read More

How Are Earthquakes Measured?

Scientists measure the strength of an earthquake with a machine called a seismograph, which takes its name from seismos, the Greek word for an earthquake. The seismograph basically consists of a very …

Read More

Who Was Reinhold Messner?

Reinhold Messner didn’t just climb mountains, he conquered them the hard way, alone, without oxygen, or at record speed. Born and raised in northern Italy, Messner began scaling the peaks of the …

Read More
Share on FacebookTweet about this on TwitterShare on Google+Share on RedditPin on PinterestEmail this to someone