Beatles drummer Ringo Starr has revealed what had inspired his iconic catchphrase, as he finally set the record straight ...

These images include one in which the animal kingdom ... As you live with the word peace each day you will be drawn to exploring peace as much as you are to reflecting and meditating on it.

This stunning picture shows the War and Peace Nebula, otherwise known as NGC 6357. This nebula is located in the constellation Scorpius and is located some 8,000 light-years from Earth.

In other words, it’s a negative definition — explaining what peace is not, rather than what it is. Of course, these top-down ways of measuring peace don’t capture the full picture.