In order to save energy and reduce your CO2-emissions, please watch videos on a on a smart phone, notebook or laptop wherever possible rather than on a TV-set or large flat-screen. For data transmission, we suggest that you use a LAN cable rather than an internet connection via mobile telephony. When you stream videos, please make sure to choose the appropriate image quality: If you select a slightly lower resolution such as 720p or 480p instead of watching in full HD-resolution, you will consume less energy.