Care about the environment? Nokia has a simple tip for you.

They say you should consider using a mobile phone when making video calls to family members instead of a desktop computer fitted with a webcam as that setup will use much more energy. Here’re some numbers:

With the same amount of energy used for a 10 minute webcam talk on your desktop computer, you can have a video call on your mobile phone for over 20 hours.

Related: Use Internet on Mobile Phones