Eco-inventors present projects after 100-day retreat France About one hundred experts and volunteers from around the world are rounding off a five-week retreat in a countryside castle near Paris, during which they creates innovative ecological projects. A hundred days ahead of the COP 21, the 12 projects of the POC 21 - which include a "perpetual shower" and a solar-powered generator - will be presented to the public this week-end at the Alternatiba festival in Paris, where 360 organisations will propose alternative solutions to reduce our impact on climate change. IMAGES AND SOUNDBITES