More than a third of the world's food goes uneaten, and many crops harvested in Africa are discarded rather than sold, according to an initiative announced on Thursday by the Rockefeller Foundation to cut food waste and loss by half.

The seven-year, $130 million project aims to tackle food waste from crops in the fields to dinner tables in industrialized nations, the foundation said in its announcement at the World Economic Forum meeting in Davos, Switzerland.

Sub-Saharan Africa will receive much of the initiative's resources, the foundation said. In Kenya, Nigeria and Tanzania, up to half of some crops are lost due to inefficient harvesting, storage, processing and time to market, it said.