In Albi, light is cheap The town of Albi has installed which are more eco-friendly. These produce good quality white light which takes the sensitivity of eyes to colours into account. The light is also distributed better; this reduces light pollution. The lampposts are permanently controlled from the town hall. And they save energy: to produce the same light intensity, this system requires half the energy needed by a classic system. 90 lampposts

Over a billion inhabitants still do not have access to drinking water and demand could triple by 2059. Chaque être humain a théoriquement besoin de 30 à 50 litres par jour pour boire, cuire ses aliments ou se laver. Or, 1/6 de l'humanité n'a pas accès à une eau potable. Pour favoriser l'accès à l'eau, il existe des techniques locales, peu coutêuses, et dont la mise en place est facile.