Grandparents are the 'key to human success'

London: They not only pamper their grandchildren with cuddles and cakes, and offer good advice, but grandparents are also the key to the evolution of human civilisation, say researchers.

A number of recent studies have highlighted how helpful it was to have older people around during early human development - in fact, grandparents are able to babysit, make tools, teach skills and most importantly pass on vital wisdom on human relationships, 'The Daily Telegraph' reported.

Studies carried out by London's Natural History Museum emphasised the importance of experience in food gathering. Professor Chris Stringer, author of 'The Origin of Our Species', said elders pass on knowledge of poisonous food, the location of water supplies and important skills such as tool-making.

Most importantly they know the distant relationships with other tribes so it is easier to negotiate rules around access to water holes or to land rich in game.