![](lw_resource/lw_events/lw_news_logo_136.jpg)
Quelle: thinkstock/iStock/welcomia
![](lw_resource/lw_events/lw_news_logo_135.jpg)
Quelle: Forschungszentrum Jülich GmbH
![](lw_resource/lw_events/lw_news_logo_134.jpg)
Quelle: Forschungszentrum Jülich GmbH
![](lw_resource/lw_events/lw_news_logo_133.jpg)
Quelle: WavebreakmediaMicro/fotolia.com
![](lw_resource/lw_events/lw_news_logo_131.jpg)
Quelle : Thinkstock/gettyimages international:
Windräder: javigarlu; Abwasser: daizuoxin; Pumpen: sauletas; Pipelines: Andrei Merkulov; Flaschen: Ryan McVay; Holz: yellowpaul;
![](lw_resource/lw_events/lw_news_logo_130.jpg)
Quelle: thinkstock/iStock/welcomia
![](lw_resource/lw_events/lw_news_logo_129.jpg)
Quelle: Forschungszentrum Jülich GmbH
![](lw_resource/lw_events/lw_news_logo_126.jpg)
Quelle : Thinkstock/gettyimages international:
Windräder: javigarlu; Abwasser: daizuoxin; Pumpen: sauletas; Pipelines: Andrei Merkulov; Flaschen: Ryan McVay; Holz: yellowpaul;