Though the exact length of a "stadia" is unknown, his measurement is thought to be accurate to within one percent 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 ...

CC0 Usage Conditions ApplyClick for more information. About two thousand years ago, a Greek scholar named Eratosthenes used some sticks, shadows and math to calculate the circumference of the Earth.

Off the coast of southeastern Mexico, an ocean giant was fitted with a satellite tag for a “record-breaking” tracking study. James Beheshti via Unsplash Whale sharks are the world’s largest fish, and ...