Reading is easy but mastering is tough. Anyone can read tons of books, yet the real challenge comes to studying them smartly.

Ask yourself questions like "Why does it work this way?" - this helps you retain knowledge longer and apply it better in exams.

Israeli children cooled off in a water fountain near Jerusalem's Old City on Aug. 13, as temperatures in Jerusalem reached 102 degrees, during a scorching heat wave. Photo by Debbie Hill/ UPI Aug. 25 ...