OUR WORLD PAST. PRESENT. FUTURE.

THE happiest everyday sights include a rainbow, a baby's smile - and a clear night sky full of stars.

- BY OLIVER LEWIS

A poll of 2,000 adults found 28 per cent crack a smile when they catch sight of a dog so excited it can't stop wagging its tail.

And 24 per cent love nothing more than seeing an older couple walking hand-in-hand - but a random act of kindness tops the list for 39 per cent.

A sleepy pet stretching instantly lifts the mood for 22 per cent, and the same amount have their hearts warmed by the sight of ducks waddling ina line.

A fifth added seeing strangers help each other out - like carrying shopping or picking up something dropped - is one of the most wholesome, feelgood things in everyday life.