A recent panel debate led by the Guardian's Katine website and Farm-Africa discusses precisely this question: how can African smallholder farmers transform themselves into entrepreneurs?

This NASA satellite shows images of a sprawling solar panel farm in Dunhuang, in north west China's Gansu Province, that has tripled in size between 2012 and today.

The overall design plan of the CAD system is put forward based on structure features of farm machine panel die.