The animals walk around and pull a large horizontal pulley which drives a smaller pulley to provide power to a generator, maize mill, water pump etc. in a village.

The ability to build moderate-sized reservoirs at low-cost for irrigation water - that will fill-in for rains missing from traditional growing seasons - can reduce the affects of changes in rain patte

The ability to build moderate-sized reservoirs at low-cost for irrigation water - that will fill-in for rains missing from traditional growing seasons - can reduce the affects of changes in rain patte

The ability to build moderate-sized reservoirs at low-cost for irrigation water - that will fill-in for rains missing from traditional growing seasons - can reduce the affects of changes in rain patte

Buying tractors or the fuel required to power them is far beyond the reach of most African small farmers. At the same time, they are tired from the energy draining attempt to raise their families bey

Buying tractors or the fuel required to power them is far beyond the reach of most African small farmers. At the same time, they are tired from the energy draining attempt to raise their families bey

Buying tractors or the fuel required to power them is far beyond the reach of most African small farmers. At the same time, they are tired from the energy draining attempt to raise their families bey

Buying tractors or the fuel required to power them is far beyond the reach of most African small farmers. At the same time, they are tired from the energy draining attempt to raise their families bey