not enough people are demanding aconro pitia. t ou people are demanding changes to where we g our engyro that's one of our largest challenges sce 2005, over 340 square mis ofetnd aund ne orleans have vanished. experts bie ts ay a mar len e devastation of hurricane katrina. they warof more dasters ahead du to climate change, but that was not a subjecturg thpridti dat. >> the no one talked about climate change. we had three debat and not a single mention of climate chge the first time where we have had complete quiet on that iue. i was very disappointe >>e ll not say who he is voting for. no matter who becom president, dnophe will have a full plate. >> the country is on its way t phin outucar power. geansays promoting -- germany is promoting alternative sources of energy. >>osreinan iue. ientists have a solution. here, downsizing is the key. is aresh idea that could help germany's solar-energy industry out of its current crisis, using a lens to concentrate light on the mini solar panel. this man won the prize for his multilayered s