The Earth’s Rotation Is Gradually Slowing Down
The length of a day millions of years ago was shorter than today. ...read more
The length of a day millions of years ago was shorter than today. ...read more
Are you a cyberchondriac? You're not alone. Worst-case scenarios for minor symptoms are easy to find — and fall for. ...read more
Did King Arthur actually exist? Scholars have debated this question ever since the legend was born in the 9th century. ...read more