Water water everywhere...

2 good ideas concerning water for developing countries.

1. hippo roller. Instead of women and children carrying heavy jerry cans of water these can rolled on the ground making water collection an easier and faster task. Such a simple idea but brings big benefits to those in need.

2. Water pyramid or water cone. The idea here is to use energy from the sun to evaporate dirty or polluted water and then condense it into drinking water. The water pyramid with an area of 600 square metres can produce over 1000 litres a day, while the water cone with a base diameter of 60cm can produce up 1.7 litres per day. This is how it works>>>