Who are the best African rappers? Since the 1980s, rappers across Africa have grown in cultural, social and political influence. Have a look at the most influential.

Medically reviewed by Christine L. Larsen, MD Eye strain occurs when your eyes feel tired, achy, or dry after extended screen use, reading, or close-up tasks.Simple fixes, such as the 20-20-20 rule, ...

John Morales and Todd Gross tell PEOPLE how forecasting works, the trouble with social media and how the public can get the ...