Science teachers in a summer physics class at Southeast Missouri State University relied on shadows Thursday to calculate the Earth's circumference during the summer solstice, the longest day of the ...

Dedicated cyclists set different goals to strive for, from cycling 40 miles in a day to cycling 5,000km or around 3106 miles in a year. I love cycling because it’s fun working your legs, hips, and ...

Born around 276 B.C. in Cyrene, Libya, Eratosthenes soon became one of the most famous mathematicians of his time. He is best known for making the first recorded measurement of the Earth’s ...

In today’s age, “How far is the stream?” is an oft-repeated query that trekking and hiking groups brace themselves for from the newbies, before breaking into a wry smile. They then recount an amusing ...

New measurements of Earth’s size show our home planet is a tad smaller than previously thought. Earth is generally agreed to have a diameter of about 7,900 miles and a circumference of about 24,900 ...